Fixes that the integration test size trackings stopped working due to
the recent refactorings (switch to the rule from `@angular/dev-infra-private`).
The size-tracking does not integrate very-well into Bazel and needs
a better solution in the future, allowing for RBE and Windows support,
but currently with the new rule/setup/structure the tracking does not
validate sizes because:
* The `dist/*.js` argument to the tracking script got expanded and
messed up the indices. It should be passed as a literal. This now
surfaced because the new rule runs commands in a shell.
* The name for the size goldens were not computed properly because they
were based on `ctx.attr.name`, but given the new structure, the test
targets are always named `test`.
PR Close#44430
Wires up the integration test rule from the shared dev-infra package,
while also deleting the old integration test rule.
The readme is updated to reflect the changes that are being made
to run with the new integration rule. Overall one major difference is
that we will declare the integration test targets within each test
directory, making those actual bazel packages. This is more idiomatic
within Bazel and also reduces the computation within Skyframe as less
globs need to be evaluated for example.
PR Close#44238
Paul Gschwendtner