Feat/reorganize code

I think we should land first bitmask-systray!50 so we can test this properly.

Up to now I only tested the windows cross build.

added 3 commits

• f6267d0f - 1 commit from branch leap:master
• 8d3a12a9 - [refactor] move helper into bitmask-systray repo
• 0bfc7af5 - [pkg] update package generation after the refactor of bitmask-systray

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added 1 commit

• edb9e327 - [pkg] snap: don't use subprocess.run on the post-install hook

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added 1 commit

• f0823c44 - [pkg] snap: don't use subprocess.run on the post-install hook

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merged