feat(angular): incremental build generators

[LayZeeDK]

• Remove auto-generated angular generator and executor.
• Add generator @nxworker/angular:convert-to-buildable.
• Add generator @ngworker/angular:use-incremental-build.
• Add @internal/e2e-util library.
• Add @internal/test-util library.

@nxworker/angular:convert-to-buildable features:

• Convert library project
  • Unit tests
  • Integration tests
  • End-to-end tests
  • Implementation
  • Review guard clauses. Don't convert publishable libraries or non-Angular libraries with existing build targets. Look up which executor was used for buildable libraries in Nx 10.
• Convert workspace (all Angular library projects)
  • Unit tests
  • Integration tests
  • End-to-end tests
  • Implementation

@ngworker/angular:use-incremental-build features:

• Convert application project
  • Unit tests
  • Integration tests
  • End-to-end tests
  • Implementation
  • Review guard clauses. Don't convert non-Angular applications.
• Convert application project with dependencies (workspace libraries)
  • Unit tests
  • Integration tests
  • End-to-end tests
  • Implementation
• Convert workspace (all application projects with dependencies/all Angular application and library projects)
  • Unit tests
  • Integration tests
  • End-to-end tests
  • Implementation

See Setup incremental builds for Angular applications for the configuration that is automated by these generators.

[nx-cloud]

Nx Cloud Report

CI ran the following commands for commit edf9963. Click to see the status, the terminal output, and the build insights.

Status	Command	Start Time
	nx affected:build --base=origin/main	2/1/2021, 7:13:45 AM
	nx affected:lint --parallel --base=origin/main	2/1/2021, 7:13:45 AM
	nx affected:test --parallel --base=origin/main	2/1/2021, 7:13:43 AM
	nx run-many --target=e2e --all --parallel --skip-nx-cache --skip-nx-cache	2/1/2021, 7:13:48 AM

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[LayZeeDK]

Maybe we should have a --force option to override existing targets and otherwise log them, but leave them as is.