refactor: rework transformCallback

[Legend-Master]

This PR refactors transformCallback and the functions calls to it into a few js functions, and instead of binding them on window, we put them inside window.__TAURI_INTERNALS__.callbacks instead

Also introduced

• window.__TAURI_INTERNALS__.runCallback to replace the old window['_{cb}'] which is quite hard to understand what it's doing
• window.__TAURI_INTERNALS__.unregisterCallback to replace delete window['_{cb}']

Honestly, window['_{cb}'] is super hard to understand and we also need to use format_callback to send a warning message to test if the callback is still there in case of webview reloads

[github-actions]

Package Changes Through e9aaa14

There are 5 changes which include tauri with minor, @tauri-apps/api with minor, tauri-bundler with patch, tauri-cli with patch, @tauri-apps/cli with patch

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	2.5.0	2.6.0
tauri-bundler	2.4.0	2.4.1
tauri	2.5.1	2.6.0
@tauri-apps/cli	2.5.0	2.5.1
tauri-cli	2.5.0	2.5.1

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[Legend-Master]

Should we also expose unregisterCallback and runCallback?

[lucasfernog]

you have so many great ideas ❤️