[Feature] Show "Other user scripts" in Popup menu

Motivation

To have the same functionality like in Greasemonkey and in Firemonkey. Also somehow semi-related to: https://github.com/violentmonkey/violentmonkey/issues/2287

I used Greasemonkey for years, but I'm fed up with it, as it has become a cumbersome crap, I want to switch to Violentmonkey because it has many advantages over GM, and the only thing GM has better is "Other user scripts" in the Popup.

Proposed Solution

Show "Other user scripts" section in Popup.

Use Cases

Not all userscripts are to be permanently enabled or disabled for a given site, sometimes users, while being on site A, want to enable or disable on demand scripts for site B before going from site A to site B.

Doing it after would:

• give an undesired effect on site B: scripts unnecessarily enabled when they should be disabled, or vice versa
• require unnecessarily / redundantly reloading of site B for script to run

In:

• GM or FM is much easier and faster because "other scripts" are listed directly in the popup and they are at your fingertips.
• VM and TM it's cumbersome because requires each time to open (or to keep pinned) a separate tab with the settings / list of userscripts.

It's useful:

• as some users just need some scripts to simply run only sometimes on the same site: not never, and not always
• for testing / debugging purposes, which often involves enabling and disabling some scripts in the advance

The "Other user scripts" can be collapsible, and can be collapsed by default until manually uncollapsed on demand by the user, with a posibility to remember / save the uncollapsed state, as some users may want to keep them always uncollapsed by default.

Screenshoots