[vm/bytecode] Include source info and asserts into platform with bytecode

* Include source positions, source text (if provided by front-end, which is
  controlled by a separate option) and assertions into platform with bytecode.
  Also use environment defines if provided.

* Omit bytecode for synthetic static fields '_redirecting#' injected
  by front-end, as they contain invalid AST nodes (taking tear-off of
  a constructor). This is needed to avoid emitting bytecode which cannot be
  loaded.

* Correctly merge source information such as source text and line numbers
  in bytecode generator if the script was originally created for an
  anonymous mixin application without such information.

* Always include import URIs into source information, even if other information is
  excluded (for members in anonymous mixin applications / noSuchMethod forwarders /
  forwarding stubs).

* Set native resolvers for vm/cc/PrintJSON test, as printing all objects to JSON
  involves collecting token positions, which may read bytecode from platform and
  need native resolvers to process native method entries.

Change-Id: I971e880c25439c0ec69db3a231a0085ccd5d15ad
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/113780
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Régis Crelier <regis@google.com>