Implementation of transform to enable Multi Zoom Level Support for Win32

[amartya4256]

Addressed issues

• HiDPI improvements in SWT with single and multiple monitor setup. #62
• [Multi-Monitor] SWT applications to support and work with different zoom values per Shell. #131

Requires

• Implementation of GC to enable multi zoom level support for win32 #1214

Note: Only the last commit in this PR is to be reviewed. Previous commit(s) belong to the prerequisite PR(s)

Description

This pull request is based on the implementations of PR #1214. It extends to the native zoom which is provided within widget and propagated to GC. In this PR, we provide a map of different handles to Transform for different zoom levels as required by different monitors. The method win32_getHandle provides the appropriate handle for the scaled transform as per requested by the client. So far, Transform is only used by GC in the project, so all the calls from GC has been adapted to use the new method to obtasin the right handle.

[github-actions]

Test Results

   458 files  +8     458 suites  +8   6m 32s ⏱️ -14s
 4 129 tests +2   4 121 ✅ +2   8 💤 ±0  0 ❌ ±0 
16 321 runs  +2  16 229 ✅ +2  92 💤 ±0  0 ❌ ±0 

Results for commit 778da20. ± Comparison against base commit f708ac3.

♻️ This comment has been updated with latest results.

[fedejeanne]

Looks better thank you!

Some remarks though:

• You should reduce the visibility of the new method.
• There is a failed test (a leak)

1 leaks found, the first is:
java.lang.AssertionError: 1 leaks found, the first is:
	at org.eclipse.swt.tests.junit.AllNonBrowserTests.afterClass(AllNonBrowserTests.java:92)
	...
Caused by: java.lang.Error: SWT Resource was not properly disposed
	at org.eclipse.swt.graphics.Resource.initNonDisposeTracking(Resource.java:172)
	at org.eclipse.swt.graphics.Resource.<init>(Resource.java:120)
	at org.eclipse.swt.graphics.Transform.<init>(Transform.java:140)
	at org.eclipse.swt.graphics.Transform.<init>(Transform.java:72)
	at org.eclipse.swt.tests.junit.Test_org_eclipse_swt_graphics_GC.test_drawLine_noSingularitiesIn45DregreeRotation(Test_org_eclipse_swt_graphics_GC.java:750)
	...

Could you please look into that?

All fixed