switch to ical.js and cleanup obsolete files - v0.4.6 [skip-ci]

Makefile

@@ -1,10 +1,30 @@
+# Makefile for iCalendar Plug
+
+.PHONY: build test bump release check-versions
+
+# Run all tests
+test:
+	deno task test
+
+# Increment patch version in deno.json
+bump:
+	deno task bump-version
+
+# Sync version from deno.json to all other files
+sync-version:
+	deno task sync-version
+
 # Check version consistency
 check-versions:
 	./check_versions.sh
 
-# Build the plug using a Docker container with Deno
-build: check-versions
-	docker run --rm -v /home/sstent/Projects/silverbullet-icalendar:/app -w /app denoland/deno:latest task build
+# Build the plug using local Deno
+build: sync-version
+	deno task build
+
+# Bump version and build
+release: bump build
+	@echo "Release built successfully."
 
 # Helper to build and copy to a local test space (if needed)
 deploy-test: build