Restructure: remove separate parser

src/ergogen_footprint_converter/converter.py

@@ -1,8 +1,10 @@
-class Converter:
-    input = ""
+from kiutils.footprint import Footprint
 
-    def __init__(self, input: str):
-        self.input = input
+class Converter:
+    footprint: Footprint 
+
+    def __init__(self, footprint: Footprint):
+        self.footprint = footprint
 
     def convert(self) -> str:
         return ""