Fix: Buildifier cannot find .buildifier-tables.json when run from a subdirectory

[dpleshakov]

Fix the issue where Buildifier fails to locate the .buildifier-tables.json file when specifying a relative path in the AddTables configuration and running Buildifier from subdirectories within the workspace. Adding the findTablesPath function similar to the FindConfigPath to search for .buildifier-tables.json.

Fix #1311

[dpleshakov]

Does anyone know how to get tests logs from macOS into account the error below?

(14:11:43) INFO: Build Event Protocol files produced successfully.
buildkite-agent artifact upload --content_type=text/plain;encoding=utf-8 buildifier/config/config_test/test_attempts/attempt_1.log
Incorrect Usage: flag provided but not defined: -content_type```

[dpleshakov]

Does anyone know how to get tests logs from macOS into account the error below?

(14:11:43) INFO: Build Event Protocol files produced successfully.
buildkite-agent artifact upload --content_type=text/plain;encoding=utf-8 buildifier/config/config_test/test_attempts/attempt_1.log
Incorrect Usage: flag provided but not defined: -content_type```

Ok ,the issue was related to the bazelbuild/continuous-integration release versions 0.2.3 or 0.2.4. There is no error with version 0.2.5 after ff92ddf17592e330b64cfc4fad132eb91190de00. The log of the failed test is successfully attached.

[dpleshakov]

@vladmos can you please review it?