Onboard: Add onboard virtual keyboard to scarthgap

[pratheekshasn]

Summary of Changes

The PR adds the virtual keyboard "Onboard" to scarthgap.

Justification

#AB2491688 requires the keyboard to be present on scarthgap as well.

The virtual keyboard "Onboard" (present on kirkstone) had been removed from scarthgap due to build errors on python 3.12. This PR adds back the same to scarthgap with corrections required for python3.12.

Implementation

Changes that differ from kirkstone:

1. The recipe inherits setuptools3 instead of distutils3. This change is required since distutils3 has been deprecated in python3.12 and the compile step fails. Since the compile fails, there are no packages that get installed.
2. There is a new patch file that is now added to the recipe: onboard_hover_seg_fault.patch. This patch was found online here.
   Currently, when the mouse pointer hovers on a key, the app crashes with a segmentation fault, and this is what the patch fixes.

Other required changes can be seen in this PR in the meta-nilrt layer.

The keyboard can now be launched and used just like in kirkstone.

Testing

• I have built the core package feed with this PR in place. (bitbake packagefeed-ni-core)

Tested by installing the built IPK on a VM.

• Keyboard launch
• Type on keyboard by clicking on the keys
• Click on other windows (like the file explorer) to test that the keyboard goes to the background
• Click on any window or textbox where something can be typed to test that the keyboard is back in focus and can type

Signed-off by: Pratheeksha S N pratheeksha.s.n@ni.com

[amstewart]

Have y'all discussed upstreaming this? If we cannot convince meta-OE upstream to revive the recipe, then we should instead move everything into meta-nilrt.