🏗 Switch from google-camelcase to local eslint plugin

[jridgewell]

This allows us to extend the exceptions and add _Enum as an approved case.

Partial for #36754

[amp-owners-bot]

Hey @rsimha! These files were changed:

build-system/compile/compile.js

Hey @erwinmombay! These files were changed:

build-system/eslint-rules/camelcase.js

Hey @rcebulko! These files were changed:

build-system/tasks/check-types.js

Hey @gmajoulet, @newmuis! These files were changed:

extensions/amp-story/1.0/logging.js
extensions/amp-story/1.0/media-pool.js
extensions/amp-story/1.0/pagination-buttons.js

[samouri]

1. Did you intentionally remove the package-lock.json file? edit: it isn't removed
2. I might be going crazy...but I can't find the camelcase rule in this PR. Did you forget to add the file?

[rsimha]

1. Did you intentionally remove the package-lock.json file? edit: it isn't removed

The reason package-lock.json looked like it was removed was the large number of lines changed. This is almost certainly due to the use of an older (non-active-lts) version of npm. Best way to fix is to revert package-lock.json, run nvm install --lts, make sure you're on node 16 / npm 8, and re-run npm install.

[jridgewell]

1. Did you intentionally remove the package-lock.json file? edit: it isn't removed

Raghu's answer is correct, I had an old terminal window open that still had node v14. Fixed.

2. I might be going crazy...but I can't find the camelcase rule in this PR. Did you forget to add the file?

Yup, forgot to commit it. Fixed.