build(bazel): building Angular from source for MatButton and parts of CDK

[mattem]

@alexeagle This was a rough first pass, just trying to get something working. The main parts were removing module.id in all the components (they are commented out here in here) and adding the right dependencies to parts of MatButton and CDK.

I've not tested the regular bundling of Material after these changes!

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[jelbourn]

Hey there, I had actually gone down this road already and found that the result doesn't work for unit tests and the ng_package rules, which I consider to be a hard requirement for the change.

[ngbot]

Hi @mattem! This PR has merge conflicts due to recent upstream merges.
Please help to unblock it by resolving these conflicts. Thanks!

[mattem]

@jelbourn Ah I haven't tried this with running the tests or the ng_package rule. I threw this together as a PoC for @alexeagle and the Angular Bazel example project.
Do you have any thoughts on the direction this should take in order to get it working?

[jelbourn]

All the bazel stuff is on the back-burner at least until v7 is out. I had it successfully building all the ng_module rules, but everything else was broken. The next step would be to figure out why the test rules are broken.

[johnbendi]

I believe v7 is out. I hope it will help make Bazel usable now?

[gregmagolan]

FYI. Downstream material with bazel is now supported. #13836 landed and example of usage is here angular/angular-bazel-example#228.

[mattem]

Closing this PR as it's superseded by @gregmagolan PRs and work above. Thanks!

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