AAPT2: Support id reference chaining from AAPT

AAPT would allow for ids to be declared in the form:

<item name="name" type="id>@id/other</item>

@id/name should hold a reference to @id/other. When
getResources().getValue() is called on R.id.name with resolveRefs
enabled, the resuling reference should be R.id.other.

Bug: 69445910
Test: Created tests for correct parsing of id references and correct
resolving of deep references

Change-Id: Id1feb37b2565c213dc6a19b4c401906260d7fc14