Nested right click menu

[marktaipan-cvisionai]

Category
Feature Request

Problem
The annotator's right click / context menu can get crowded; especially if there are a lot of applets and states registered to the project. This makes the menu less accessible and potentially problematic in low viewport scenarios.

Request

• Put the create states into its own submenu
• Put the track functions into its own submenu
• Put the applet functions into its own submenu

These submenus could appear/disappear on mouseover/mouseout and are likely another div that is adjacent to the current menu. Alternatively, these submenus could behave like the video settings and timeline settings menus and have a back button and require clicking.
Could also investigate using browser.menus.overrideContext instead

[bctcvai]

I switched around the initializing of this a bit in moving it to tator-js. The code still lives in annotation.js; but it uses the custom menu's web component as an interface which isn't great. I think we want to have a signal defined coming off the canvas like: "right-click event" and have the higher-order code (annotation-****) make the menu and all that.

[bctcvai]

A submenu for multiview ops would also be appropriate

[marktaipan-cvisionai]

This is dependent on completing #1934 - typically the number of state types necessitates submenus in the right click menu.