* Document a more modern way of using IntelliJ with our Bazel project.
Specifically, avoid `bazel-project-view` in favor of excluding a few
slow/unnecessary directories.
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* Add .bazel-cache to .bazelignore instead of .bazelproject.
* Bazel: Don't mention a particular version of IntelliJ; just link.
Trust the canonical source.
* added a package.json to work with yarn workspaces
This adds a package.json files on top of our typescript libraries so
that we can develop locally via yarn workspaces. The package.json that
describes the bazel managed dependencies is moved into a subfolder.
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* updated bazelignore
* SDK_VERSION -> SDKVERSION