Add Makefile with build & test actions

Makefile

@@ -0,0 +1,13 @@
+SHELL := /bin/bash
+.DEFAULT_GOAL := build
+.PHONY: build test
+
+build: 
+	@if [ -d build_release ]; then rm -fr build_release; fi
+	@mkdir build_release
+	@cmake -B build_release -S . -DCMAKE_BUILD_TYPE=Release -DENABLE_TESTING=OFF
+	@cmake --build build_release
+
+test:
+	@echo "Testing..."
+	@cd tests && ./test