In the past, the docs examples were configured to not use AOT
compilation in development mode (only in production mode). This was an
artifact of when JIT was the default in development mode.
Now that AOT is the default (even in development mode) for new CLI apps,
this commit configures all docs examples to always use AOT compilation.
(This has been made possible by fixing the `component-interaction` docs
example to correctly run in AOT mode in an earlier commit.)
PR Close#39001
This commit updates the docs examples to Angular v10.1.3. In addition to
updating the dependencies versions, it also updates the project's
structure and config to more closely match what a new v10 CLI app would
look like. See, also, the [diff][1] between a basic v9.1.4 CLI app and a
v10.1.3 one.
[1]: https://github.com/cexbrayat/angular-cli-diff/compare/9.1.4..10.1.3
PR Close#38993
