[TASK] Cleanup removed TYPO3 v11 support

[sbuerk]

• [TASK] Remove last traces for PHPUnit 9.x support
  Dual PHPUnit 9.x and 10.x support with typo3/testing-framework v7
  has been used in previous versions to allow testing for the full
  TYPO3 version range.

  Due to dropped TYPO3 v11 support, we can use PHPUnit 10.x completly,
  which has been prepared with the next major version preparation.

  This change removes the last dual version support switches, removes
  the PHPUnit 9.x configuration files and normalizes this to a single
  PHPUnit version usage.

• [TASK] Remove php version guard for lintTypoScript in Build/Scripts/runTests.sh
  Due to some issues of the TypoScript linter a PHPVersion
  guard has been added in Build/Scripts/runTests.sh.

  Minimum PHP version has been raised while preparing for
  the next major version and made the aforementioned check
  obsolete and is now removed.

• [TASK] Add native typing for Build/Scripts/validateRstFiles.php

• [TASK] Ensure correct ext_emconf.php for test_services_override
  This change ensures correct ext_emconf.php for the
  test fixture extension test_services_override.

• [TASK] Use camelcase extension key for extbase LocalizationUtility calls
  Extbase LocalizationUtility expectes the extension key in
  camelcase typing and converts to the lower cased extension
  key with underscores automatically.

  Use camelcase writing now in for LocalizationUtility calls.

• [TASK] Avoid deprecated Doctrine DBAL methods
  After dropping TYPO3 v11 support, we can safely
  assume the new Doctrine DBAL methods, having at
  least Doctrine DBAL 3.x on board.

  Use fetchAssociative() instead of deprecated
  method fetch() to retrieve a single record.

• [TASK] Remove cruser_id configuration support
  With TYPO3 12.0 the cruser_id TCA configuration
  feature has been removed completly. That has been
  covered for dual TYPO3 v11/v12 support previously
  within the TCA and TCAOverride files connected to
  Typo3Version->getMajorVersion() checks.

  Not having to support TYPO3 v11 anymore, this change
  removes the configuration completly.

  • https://docs.typo3.org/c/typo3/cms-core/main/en-us/Changelog/12.0/Breaking-98024-TCA-option-cruserid-removed.html

• [TASK] Align TCA configuration for required column option
  TYPO3 12.0 deprecated the old way to define a column
  as required as part of the eval [1] and introduced
  a new option as replacement [2].

  Until now this has been handled within the corresponding
  TCA Override file to keep support for TYPO3 v11 next to
  TYPO3 v12.

  This change removes the override and uses the new option
  in the TCA file directly.

  [1] https://docs.typo3.org/c/typo3/cms-core/main/en-us/Changelog/12.0/Deprecation-97035-RequiredOptionInEvalKeyword.html
  [2] https://docs.typo3.org/c/typo3/cms-core/main/en-us/Changelog/12.0/Feature-97035-UtilizeRequiredDirectlyInTCAFieldConfiguration.html

• [TASK] Remove dual TCA option for DateTime columns
  With TYPO3 v12 a new TCA type=datetime has been introduced, which
  has been handled conditional for TYPO3 v11 and v12. [1][2]

  This change removes the TYPO3 v11 conditional handling of
  these configurations.

  [1] https://docs.typo3.org/c/typo3/cms-core/main/en-us/Changelog/12.0/Feature-97232-NewTCATypeDatetime.html
  [2] https://docs.typo3.org/c/typo3/cms-core/main/en-us/Changelog/12.0/Breaking-97358-RemovedEvalintFromTCATypeDatetime.html

• [TASK] Use acciciative array keys for TCA items
  TYPO3 v12 changed some TCA definitions. Basically,
  these are covered for now by the provided TCA auto
  migration. That triggers E_USER_DEPREACTED errors
  which will fail in tests.

  TCA automigration and the E_USER_DEPRECATED notice
  has been mitigated with some version based switches
  within the TCA configuration to avoid failing tests.

  This change removes the version based configuration
  in favour of TYPO3 v12 only configuration.

  [1] https://docs.typo3.org/c/typo3/cms-core/main/en-us/Changelog/12.3/Deprecation-99739-IndexedArrayKeysForTCAItems.html
  [2] https://docs.typo3.org/c/typo3/cms-core/main/en-us/Changelog/12.3/Feature-99739-AssociativeArrayKeysForTCAItems.html

• [TASK] Remove obsolete ExtensionManagementUtility::allowTableOnStandardPages calls
  The ext_tables.php contains two calls to the deprecated
  \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::allowTableOnStandardPages
  method called for no longer existing extension tables.

  Instead of migrating the calls to TCA Override configuration
  and creating broken tables, these calls are now removed due
  to beeing obsolete already since 2.x.

• [TASK] Use UNIX-timestamp as exception codes in abstract testcase

• [TASK] Add some method return type declarations
  This change adds some obvoius method
  return type declarations.

• [TASK] Avoid deprecated TypoScriptFrontendController->doWorkspacePreview()
  With TYPO3 v12 some TypoScriptFrontendController methods
  has been deprecated in favour of the context class [1].

  This change replaces the method call following the recommended
  migration path noted in the TYPO3 changelog entry [1].

  [1] https://docs.typo3.org/c/typo3/cms-core/main/en-us/Changelog/12.0/Deprecation-97531-ContextRelatedMethodsWithinTSFE.html

• [TASK] Migrate deprecated flash message constants
  TYPO3 v12 deprecated the use of the flash message
  constants (integer value) as message severitys in
  favour on a new native enum class [1].

  This change replaces usages of these constants
  with the enum as no TYPO3 v11 support is needed
  anymore and prepares for adding TYPO3 v13 support.

  Following UsageService methods are now marked as
  internal to make it clear:

  • determineSeverity()
  • determineSeverityForSystemInformation()

  [1] https://docs.typo3.org/c/typo3/cms-core/main/en-us/Changelog/12.0/Deprecation-97787-SeveritiesOfFlashMessagesAndReportsDeprecated.html

• [TASK] Use PHPUnit attributes instead of annotations
  This change modifies the tests to use the php
  attributes provided by PHPUnit instead of the
  old php doc-block annotations.

  Used command(s):

  Build/Scripts/runTests.sh -t 12 -p 8.1 -s phpstanGenerateBaseline