Suggestion: add a Search All option

[AlliterativeAlias]

Add an option to search all scripts. Currently one can only search a single opened script at a time. This option would be useful for cases when one wants to replace all appearances of a certain term, which are generally inconvenient to look for (such as all appearances of a vanilla character's name in cutscene dialogue, when users want to change the species of that character - we've had many cases of users wanting to do that).

[theCapypara]

This is not trivial, since this would first requiring decompiling all scripts, which can take quite a while. Before adding this, we probably should add some way to decompile all scripts.