refactor: Standardize .editorconfig

Use this link to re-run the recipe: https://app.moderne.io/builder/N3MJaFjMF?organizationId=T3BlblJld3JpdGU%3D

Co-authored-by: Moderne <team@moderne.io>

Author: natedanner

.editorconfig

@@ -0,0 +1,9 @@
+root = true
+
+[*]
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[src/test*/java/**.java]
+indent_size = 4
+ij_continuation_indent_size = 2