Glimmer DSL for SWT 4.22.0.0

SWT 4.22 was just recently released, and you know what that means! It's Glimmer DSL for SWT major upgrade time! Glimmer DSL for SWT 4.22.0.0 just got released to include SWT 4.22 among other big upgrades and changes:

• Upgrade to SWT 4.22
• Upgrade to JDK17
• Upgrade to glimmer 2.5.4
• Support new SWT 4.22 sync_call keyword, which is like sync_exec, but returns value of evaluated expression (though sync_exec was already enhanced by Glimmer before to return the expression evaluated value just like sync_call)
• More work regarding: Do not clean observers when disposing of a widget while closing the last shell (e.g. when closing an app, it is not needed to clean observers, so it is better to exit faster)
• Fix issue in Battleship sample caused by data-binding nil model, which is forbidden in glimmer 2.5.x
• Fix issue with closing Stock Ticker sample taking too long

Happy Glimmering!