feat: add pre-commit configuration and install in devcontainer

[tallaxes]

Description

Add pre-commit configuration file and a feature to have pre-commit in devcontainer / Codespace. The configuration includes the following hooks (the selection is based on security concerns + commonly observed issues):

• gitleaks - prevention of checking in secrets
• golangci-lint
• shellcheck
• typos - spellchecker (and a compatible VSCode plugin)
• end-of-file-fixer
• trailing-whitespace

Note that these run only on the changed files.

The pre-commit failure experience in VSCode is not great - it will usually show up as "modified files" popup, and one needs to look at the new changes or Git log - but pre-commit finding something is supposed to be rare, so deemed acceptable.

How was this change tested?

• Creating a file with something that pre-commit will catch, and trying to commit

Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: #
• No

Release Note

[coveralls]

Pull Request Test Coverage Report for Build 7676701732

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 97.626%

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Totals
Change from base Build 7675929552:	0.0%
Covered Lines:	35605
Relevant Lines:	36471

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💛 - Coveralls

[Bryce-Soghigian]

Pre-commit hook is an easy win, although I suspect that anyone developing wtihout that precommit hook wiill push things caught by the hook(IE upstream compatibility spelling error.