[feature] Update variable names after renaming class

[j4k0xb]

Describe your idea:
When renaming classes, it would be useful if all variables/parameters/etc of that type get their names based on the new instead of original name.

Example (j5 got renamed to Preferences):

Preferences j5Var = this.prefs;

should be shown as preferences or preferencesVar instead of j5Var

Similar thing when hovering, it should show Map<ServerRegion, String> instead:

[j4k0xb]

Thanks for implementing, already makes it so much easier to look through the code 👍🏻

However I noticed that the tooltip for local variables still shows the original name and null:

[skylot]

However I noticed that the tooltip for local variables still shows the original name and null

@j4k0xb sure. This part is a little harder to fix, so I will fix it later.

[skylot]

@j4k0xb fixed. Please check 😄

[j4k0xb]

thx, works as intended now