feat: add Webview.reload and WebviewWindow.reload

[Simon-Laux]

For reloading pages from rust, without hacks such as injecting javascript (that may not work without js #12821 and are not really good practice, rather use the real native method on the WebView).

Example to try: https://github.com/Simon-Laux/tauri-experiments/tree/main/examples/reload_tauri

tested on: macOS, linux, windows and android (iOS was not tested but should also work because it is the same code as on macOS)

---

Progress:

• depends on feat: add Webview.reload wry#1500
• pr description

other progress:

• signed commits
• .changes file

[github-actions]

Package Changes Through 099eb63

There are 3 changes which include @tauri-apps/api with minor, tauri with minor, tauri-runtime-wry with minor

Planned Package Versions

The following package releases are the planned based on the context of changes in this pull request.

package	current	next
@tauri-apps/api	2.3.0	2.4.0
tauri-runtime-wry	2.4.1	2.5.0
tauri	2.3.1	2.4.0

Add another change file through the GitHub UI by following this link.

---

Read about change files or the docs at github.com/jbolda/covector