feat: Add exception dedup workflow

.github/workflows/validate-exception-jsons.yml

@@ -0,0 +1,22 @@
+name: Validate Exception JSONs
+
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - "pkg/kor/exceptions/**"
+
+jobs:
+  sort_json:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v3
+
+      - name: Validate Exception JSON Sorting
+        run: make validate-exception-sorting
+
+      - name: Validate Exception Deduplication
+        run: make validate-exception-duplications

Makefile

@@ -36,4 +36,27 @@ validate-exception-sorting:
 	done; \
 	if [ "$$PRINT_ERR" = 0 ]; then \
 		echo "Run the following command to sort all files recursively: make sort-exception-files"; \
-	fi; \
+	fi; \
+
+dedup-exception-files:
+	@echo "Deduplicating exception files..."
+	@find $(EXCEPTIONS_DIR) -type f -name '$(EXCEPTIONS_FILE_PATTERN)' -exec sh -c ' \
+		jq '\''keys[0] as $$key | { ($$key): (.[$$key] | group_by(.Namespace, .ResourceName) | map(.[0])) }'\'' "$$1" > "$$1.tmp" && mv "$$1.tmp" "$$1" \
+	' sh {} \;
+
+
+validate-exception-duplications:
+	@PRINT_ERR=1; \
+	for file in $(wildcard $(EXCEPTIONS_DIR)/*/$(EXCEPTIONS_FILE_PATTERN)); do \
+		DUPLICATES=$$(jq 'keys[0] as $$key | .[$$key] | group_by(.Namespace, .ResourceName) | map(select(length > 1))' "$$file"); \
+		if [ "$$DUPLICATES" != "[]" ]; then \
+			if [ "$$PRINT_ERR" = 1 ]; then \
+				echo "The following JSON files contain duplications:"; \
+				PRINT_ERR=0; \
+			fi; \
+			echo "\t$$file"; \
+		fi; \
+	done; \
+	if [ "$$PRINT_ERR" = 0 ]; then \
+		echo "Run the following command to deduplicate all files recursively: make dedup-exception-files"; \
+	fi; \