Create index for methods #2755
Description
there are two services on LanguageService
findWorkspaceUrisForCodeObjectIdsForErrorStackTrace
findWorkspaceUrisForMethodCodeObjectIds
they return uri of the file where the method is, with or without line number.
both these services query the PSI, it can be a large query in large projects.
we can create a file based index where the key is method id and value is line number. these services can query the index and get the corresponding VirtualFile instead of using its url to find it.