RFR: 8341128: open source some 2d graphics tests

[Phil Race]

open source a few  2d graphics related tests for line drawing, text performance, image rendering.

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Commit messages:
 - 8341128

Changes: https://git.openjdk.org/jdk/pull/21292/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21292&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341128
  Stats: 563 lines in 7 files changed: 563 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/21292.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21292/head:pull/21292

PR: https://git.openjdk.org/jdk/pull/21292