This commit makes a few minor changes to enable syncing the CLI repository
into google3.
1. mark pkg_tar and pkg_npm as external
2. remove dependencies (marked as comment) which are stale in google3
3. remove TS files generated from JSON schema in BUILD files since these
files are compiled and added to the g3 codebase at sync time
4. Some minor typing changes
5. Remove duplicate licenses
6. mark dependencies which are not available in g3 as external
7. Immediately type the result of JSON.parse() as required by g3 linter.
Otherwise, the type defaults to `any`.
With this change we "vendor" TypeScript 3.6 in build optimizer instead of using directly the npm package.
Reasons:
- We cannot update to a more recent version of TypeScript due to https://github.com/microsoft/TypeScript/issues/38412
- Yarn workspace are not supported under Bazel. This means currently we are running unit testswhich uses a different TypeScript version at runtime.
- In TypeScript 3.9, the shape of ES2015 classes changed https://github.com/microsoft/TypeScript/pull/32011, this requires some changes in the UT expects, but this again will not be correct to change now.
Contains fixes related to the symlink behaviour inside of bazel. Without it, webpack needs to be configured to be aware of symlinks and preserve the paths.
