feat: go to definition when aliases modules

[mhanberg]

Collects references to modules in alias calls, which allows you do use go to definition and find references on them

Example

alias Foo.Bar.Baz
#     ^^^^^^^^^^^

alias Foo.Bar.{Baz, Bing}
#              ^^^  ^^^^

alias Foo.Bar.{
  Baz,
# ^^^
  Bing
# ^^^^
}

[mhanberg]

Current dependencies on/for this PR:

• main
  • PR feat: go to definition when aliases modules #152 👈

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