Full 'code' widget refactor to utilize controllers and cross controller event signaling

src/libs/dto/code/popped_file_event.py

@@ -0,0 +1,15 @@
+# Python imports
+from dataclasses import dataclass, field
+
+# Lib imports
+
+# Application imports
+from .code_event import CodeEvent
+
+
+
+@dataclass
+class PoppedFileEvent(CodeEvent):
+    fname: str = ""
+    fpath: str = ""
+    ftype: str = ""