refactor: rename Materia to Asignatura across the codebase

- Updated type definitions and interfaces to replace 'Materia' with 'Asignatura'.
- Refactored components and routes to reflect the new naming convention.
- Adjusted related types and constants for consistency.
- Removed the old Materia type definition and added Asignatura type definition.
- Ensured all references in UI components and logic are updated accordingly.

fix #50

src/data/hooks/useSubjects.ts

@@ -91,7 +91,7 @@ export function usePersistSubjectFromAI() {
   const qc = useQueryClient()
 
   return useMutation({
-    mutationFn: (payload: { planId: UUID; jsonMateria: any }) =>
+    mutationFn: (payload: { planId: UUID; jsonAsignatura: any }) =>
       subjects_persist_from_ai(payload),
     onSuccess: (subject) => {
       qc.setQueryData(qk.asignatura(subject.id), subject)