Move "View Connected Files" into dedicated window

[solvedDev]

Large entities can easily cause overflow on the context menu. It would also be nice to sort the connected files by category; e.g. grouping all animations/geometries together. It would also be nice to connect files with a proper depth scan again (e.g. showing all client files upon interacting with server entity file)

Related ideas:

• [ ] Show identifiers within animations/geomtries/etc.
• [ ] "Also used by" for animations/geometries/etc. to quickly navigate the project