feat(Makefile): add initial Makefile with help and run-inspector targets

- Introduce a Makefile to streamline project commands
- Add help target to display available commands
- Include run-inspector target for running the MCP inspector

Makefile

@@ -0,0 +1,14 @@
+.PHONY: help
+.DEFAULT_GOAL := help
+
+# initialise .env file for all targets if it exists
+-include .env
+
+help: ## Show this help.
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
+
+# Document each target that should appear in help using a comment placed after the target's colon, starting with '##' (as shown above).
+# Targets without such a comment will not appear in the help output.
+
+run-inspector: ## Run the MCP inspector.
+	@npx @modelcontextprotocol/inspector -e DISCORD_TOKEN=$(DISCORD_TOKEN)