Add cluster info gatherer for the upcoming Ambient mesh migration-estimation page

.github/workflows/verify-checksums.yml

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+name: Verify Checksums
+on:
+  pull_request: {}
+  push:
+    branches:
+      - main
+
+jobs:
+  verify-checksums:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - run: make verify-checksums

.gitignore

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+.DS_Store

Makefile

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+.PHONY: checksums
+checksums:
+	@find . -type f \( -name "*.sh" -o -name "*.bash" \) | while read file; do \
+		echo "Creating checksum for $$file"; \
+		sha256sum "$$file" | awk '{print $$1}' > "$$file.sha256"; \
+	done
+
+.PHONY: verify-checksums
+verify-checksums:
+	@errors=0; \
+	for file in $$(find . -type f \( -name "*.sh" -o -name "*.bash" \)); do \
+		cs_file="$$file.sha256"; \
+		if [ ! -f "$$cs_file" ]; then \
+			echo "[ERR] $$file - checksum file missing"; \
+			errors=$$((errors+1)); \
+		else \
+			computed=$$(sha256sum "$$file" | awk '{print $$1}'); \
+			expected=$$(awk '{print $$1}' "$$cs_file"); \
+			if [ "$$computed" = "$$expected" ]; then \
+				echo "[OK] $$file"; \
+			else \
+				echo "[ERR] $$file - checksum mismatch"; \
+				errors=$$((errors+1)); \
+			fi; \
+		fi; \
+	done; \
+	if [ $$errors -ne 0 ]; then \
+		echo "Checksum verification failed with $$errors errors"; \
+		exit 1; \
+	fi; \
+	echo "All checksums verified successfully"