RFR: 8340967: Open source few Cursor tests - Set2

[Damon Nguyen]

Following tests are added as part of this PR:

./java/awt/Cursor/CustomCursorTest/CustomCursorTest.java - MANUAL
./java/awt/Cursor/BlockedWindowTest/BlockedWindowTest.java - MANUAL
./java/awt/Cursor/SetCursorTest/SetCursorTest.java - MANUAL
./java/awt/Cursor/JPanelCursorTest/JPanelCursorTest.java - MANUAL
./java/awt/Cursor/CursorUpdateTest/CursorUpdateTest.java - MANUAL

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Commit messages:
 - Initial commit

Changes: https://git.openjdk.org/jdk/pull/21337/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21337&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340967
  Stats: 564 lines in 5 files changed: 564 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/21337.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21337/head:pull/21337

PR: https://git.openjdk.org/jdk/pull/21337