Coerce controller paths to PascalCase for pvi Group names

src/fastcs/backends/epics/gui.py

@@ -29,6 +29,7 @@
 from fastcs.datatypes import Bool, DataType, Float, Int, String
 from fastcs.exceptions import FastCSException
 from fastcs.mapping import Mapping, SingleMapping
+from fastcs.util import snake_to_pascal
 
 
 class EpicsGUIFormat(Enum):
@@ -130,7 +131,7 @@ def create_gui(self, options: EpicsGUIOptions | None = None) -> None:
         for sub_controller_mapping in sub_controller_mappings:
             components.append(
                 Group(
-                    name=sub_controller_mapping.controller.path,
+                    name=snake_to_pascal(sub_controller_mapping.controller.path),
                     layout=SubScreen(),
                     children=self.extract_mapping_components(sub_controller_mapping),
                 )

src/fastcs/util.py

@@ -0,0 +1,3 @@
+def snake_to_pascal(input: str) -> str:
+    """Convert a snake_case or UPPER_SNAKE_CASE string to PascalCase."""
+    return input.lower().replace("_", " ").title().replace(" ", "")