feat(3.2): extract SkillRepository CRUD from monolithic SkillStore

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Brian Krafft

openspace/skill_engine/__init__.py

@@ -17,6 +17,7 @@
     "SkillVisibility",
     "ValidationError",
     "SkillStore",
+    "SkillRepository",
     "ExecutionAnalyzer",
     "SkillEvolver",
     "EvolutionTrigger",
@@ -40,6 +41,7 @@
     "SkillVisibility": (".types", "SkillVisibility"),
     "ValidationError": (".types", "ValidationError"),
     "SkillStore": (".store", "SkillStore"),
+    "SkillRepository": (".skill_repository", "SkillRepository"),
     "ExecutionAnalyzer": (".analyzer", "ExecutionAnalyzer"),
     "SkillEvolver": (".evolver", "SkillEvolver"),
     "EvolutionTrigger": (".evolver", "EvolutionTrigger"),