Migrate extension to Chrome Manifest v3#4

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ypopov516 wants to merge 4 commits intohtmlburger:masterfrom

ypopov516:master

Commits on Oct 25, 2022

Migrate extension to Chrome Manifest v3 without altering the project white space
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Fix bug where you could have multiple popup panels on a page
ypopov
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Commits on Oct 26, 2022

Fix previous issue where multiple pixelparallel popups would open on the same page
ypopov
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Commits on Nov 30, 2022

Remove unnecessary scripting permission
ypopov
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