RFR: 8328482: Convert and Open source few manual applet test to main based [v6]

[Tejesh R]

> Convert and open source these manual applet test to main based:
> java/awt/Frame/MegaIconTest/MegaIconTest.html
> java/awt/Frame/FrameMaximizedTest/FrameMaximizedTest.html
> java/awt/Frame/FrameMinimizeTest/FrameMinimizeTest.html
> java/awt/Frame/SizeMinimizedTest/SizeMinimizedTest.html
> 
> Automated the test SizeMinimizedTest.java. Since the test is failing Linux arch (Maybe related to the bug - [JDK-8305915](https://bugs.openjdk.org/browse/JDK-8305915)), the test is problem listed for Linux arch until the issue is fixed/further investigation is done.

Tejesh R has updated the pull request incrementally with one additional commit since the last revision:

  Reveiw updates

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18448/files
  - new: https://git.openjdk.org/jdk/pull/18448/files/20517050..1e9e5f28

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18448&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18448&range=04-05

  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/18448.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18448/head:pull/18448

PR: https://git.openjdk.org/jdk/pull/18448