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

web_src/js/webcomponents/absolute-date.js

@@ -0,0 +1,40 @@
+window.customElements.define('absolute-date', class extends HTMLElement {
+  static observedAttributes = ['date', 'year', 'month', 'weekday', 'day'];
+
+  update = () => {
+    const year = this.getAttribute('year') ?? '';
+    const month = this.getAttribute('month') ?? '';
+    const weekday = this.getAttribute('weekday') ?? '';
+    const day = this.getAttribute('day') ?? '';
+    const lang = this.closest('[lang]')?.getAttribute('lang') ||
+      this.ownerDocument.documentElement.getAttribute('lang') ||
+      '';
+
+    // only extract the `yyyy-mm-dd` part. When converting to Date, it will become midnight UTC and when rendered
+    // as localized date, will have a offset towards UTC, which we remove to shift the timestamp to midnight in the
+    // localized date. We should eventually use `Temporal.PlainDate` which will make the correction unnecessary.
+    // - https://stackoverflow.com/a/14569783/808699
+    // - https://tc39.es/proposal-temporal/docs/plaindate.html
+    const date = new Date(this.getAttribute('date').substring(0, 10));
+    const correctedDate = new Date(date.getTime() - date.getTimezoneOffset() * -60000);
+
+    if (!this.shadowRoot) this.attachShadow({mode: 'open'});
+    this.shadowRoot.textContent = correctedDate.toLocaleString(lang ?? [], {
+      ...(year && {year}),
+      ...(month && {month}),
+      ...(weekday && {weekday}),
+      ...(day && {day}),
+    });
+  };
+
+  attributeChangedCallback(_name, oldValue, newValue) {
+    if (!this.initialized || oldValue === newValue) return;
+    this.update();
+  }
+
+  connectedCallback() {
+    this.initialized = false;
+    this.update();
+    this.initialized = true;
+  }
+});