RFR: 8339883: Open source several AWT/2D related tests

[Phil Race]

This open sources a few AWT/2D regression tests.

-------------

Commit messages:
 - 8339883

Changes: https://git.openjdk.org/jdk/pull/20977/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20977&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8339883
  Stats: 317 lines in 3 files changed: 317 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/20977.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20977/head:pull/20977

PR: https://git.openjdk.org/jdk/pull/20977