Show git-notes (#6984)

* Show git-notes

* Make git-notes heading text localizable

* Refactor git-notes data fetching to a separate function

* Display the author and time of git notes

* Move note bubble inside the commit bubble

* Revert "Move note bubble inside the commit bubble"

This reverts commit c0951fe0e3b4dea38064515546b1825c1bcf19e1.

* Add test for git-notes

* testing ui

* Polish CSS

* Apply suggestions from code review

Co-Authored-By: Lauris BH <lauris@nix.lv>

modules/git/tests/repos/repo1_bare/objects/ca/6b5ddf303169a72d2a2971acde4f6eea194e5c

@@ -0,0 +1,4 @@
+x
¥ŽM
+Â0F]ç³ëB<C3AB>&&m"ž@\¹Of¦6ÐHG¥··ô
+~Ë·xïÃy³€Ñþ …Œ?[—Œ¶èBÓ&
+H<bÛyß™NGt­åÚ¨ø–~.ð"å1xÄIx`þÀå•å&=㚸,}¤ù{šX® <C2AE>ó¶	<09>p¬·)ÜãÂjÔ}^ 1AZ¡ÚÀ´3¦,•ú
½ÀI0

modules/git/tests/repos/repo1_bare/refs/notes/commits

@@ -0,0 +1 @@
+ca6b5ddf303169a72d2a2971acde4f6eea194e5c