Fix prettier configuration

[rajsite]

Pull Request

🤨 Rationale

In #2168 had updated prettierignore files to use a syntax for multiple line endings being handled by a single ignore line. Turns out the prettierignore files use gitignore syntax (which does not support that) while the files cli argument does support that.

👩‍💻 Implementation

• Reverted the pattern of trying to match multiple file extensions on a single line and made each file extension explicit.
• Also revert the change in #2181 as nimble components linting is the slowest validate command again and needs the concurrency help
• Aligned the angular example app eslint config with other projects so config files are linted

🧪 Testing

Validated that the output of the number of files scanned by prettier is more reasonable (626 files for nimble-components vs 13 files).

✅ Checklist

• [x] I have updated the project documentation to reflect my changes or determined no changes are needed.

[rajsite]

@jattasNI @atmgrifter00 @mollykreis PR is pretty trivial as reverts, alignment on existing patterns, and result of running format so override merging.