For #269213
This adds a new eslint rule for `as any` and `<any>({... })`. We'd like to remove almost all of these, however right now the first goal is to prevent them in new code. That's why with this first PR I simply add `eslint-disable` comments for all breaks
Trying to get this change in soon after branching off for release to hopefully minimize disruption during debt week work
transpile-only tasks for client and extensions
* extract transpile into its own file
* add transpile-client task, polish transpiler
* add transpile-extensions, improve transpile logic
* move declaration of "const enum" above it usage so that it can be used with const-enum-inlining
* (ugly) make d.ts transpilation configurable because it is needed for extensions but a problem for client
* hack my way around so that `getOwnEmitOutputFilePath` is reusable by our transpile
* honor `noEmit` flag
