Release v5.1.0

• fix(firefox): inject version.js before signing (8364274)
• build(firefox): revert to unlisted signing until AMO listing is approved (f9a4a8b)
• chore: bump version to 5.1.0 (987b745)
• fix(ui): force round corner clipping on Firefox with clip-path (19f2278)
• fix(ui): Firefox footer bottom corners square on dark background (4f37cda)
• fix(ui): Firefox corner clipping with contain:paint (8d5605d)
• fix(naurok): click multiquiz save button, fix Firefox corner clipping (53c49a0)
• fix(popup): show debug version (git hash) in popup header (d8bbba0)
• fix(build): keep semver in manifest, rename debug artifacts with hash (96691eb)
• fix(build): debug builds use commit hash in version and filename (51de5f7)
• feat(naurok): click save on multiquiz, add version display (#16) (6e0e0a2)
• build(firefox): sign extension as listed on AMO (6774ea7)
• fix(ui): exclude header/footer from all:revert wildcard (#14) (773149c)
• fix(naurok): support realtime tests, remove reprompt delay, fix card corners (#12 #13 #14) (8dbe5db)
• Merge pull request #15 from aartzz/feat/msforms (1f18e7d)
• docs: add Microsoft Forms to supported sites (#1) (7a0590c)
• feat(msforms): add Microsoft Forms provider (#1) (e30d804)