Add <overflow-menu>, rename webcomponents (#29400)

1. Add `<overflow-menu>` web component
2. Rename `<gitea-origin-url>` to `<origin-url>` and make filenames
match.

<img width="439" alt="image"
src="2fbe4ca4-110b-4ad2-8e17-c1e116ccbd74">

<img width="444" alt="Screenshot 2024-03-02 at 21 36 52"
src="aa8f786e-dc8c-4030-b12d-7cfb74bdfd6e">

<img width="537" alt="Screenshot 2024-03-03 at 03 05 06"
src="fddd50aa-adf1-4b4b-bd7f-caf30c7b2245">

![image](0f43770c-834c-4a05-8e3d-d30eb8653786)

![image](4b4c6bd7-843f-4f49-808f-6b3aed5e9f9a)

TODO:

- [x] Check if removal of `requestAnimationFrame` is possible to avoid
flash of content. Likely needs a `MutationObserver`.
- [x] Hide tippy when button is removed from DOM.
- [x] ~~Implement right-aligned items
(https://github.com/go-gitea/gitea/pull/28976)~~. Not going to do it.
- [x] Clean up CSS so base element has no background and add background
via tailwind instead.
- [x] Use it for org and user page.

---------

Co-authored-by: Giteabot <teabot@gitea.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
(cherry picked from commit 256a1eeb9a67b18c62a10f5909b584b7b220848a)

Conflicts:
	options/locale/locale_en-US.ini
	templates/package/content/cargo.tmpl
	templates/package/content/cran.tmpl
	templates/package/content/debian.tmpl
	templates/package/content/maven.tmpl

templates/repo/diff/image_diff.tmpl

@@ -7,15 +7,15 @@
 			data-mime-before="{{.sniffedTypeBase.GetMimeType}}"
 			data-mime-after="{{.sniffedTypeHead.GetMimeType}}"
 		>
-			<div class="ui secondary pointing tabular top attached borderless menu new-menu">
-				<div class="new-menu-inner">
+			<overflow-menu class="ui secondary pointing tabular top attached borderless menu">
+				<div class="overflow-menu-items tw-justify-center">
 					<a class="item active" data-tab="diff-side-by-side-{{.file.Index}}">{{ctx.Locale.Tr "repo.diff.image.side_by_side"}}</a>
 					{{if and .blobBase .blobHead}}
 					<a class="item" data-tab="diff-swipe-{{.file.Index}}">{{ctx.Locale.Tr "repo.diff.image.swipe"}}</a>
 					<a class="item" data-tab="diff-overlay-{{.file.Index}}">{{ctx.Locale.Tr "repo.diff.image.overlay"}}</a>
 					{{end}}
 				</div>
-			</div>
+			</overflow-menu>
 			<div class="image-diff-tabs is-loading">
 				<div class="ui bottom attached tab image-diff-container active" data-tab="diff-side-by-side-{{.file.Index}}">
 					<div class="diff-side-by-side">