adiciona validacao para OS Windows (#455)

Author: vianaz

Makefile

@@ -1,6 +1,10 @@
 install:
-	git config --local core.hooksPath .githooks/
-	chmod -R +x .githooks
+	@git config --local core.hooksPath .githooks/
+# This must be indented like this, otherwise it will not work on Windows
+# see: https://stackoverflow.com/questions/77974076/how-do-i-fix-this-error-when-checking-os-in-makefile
+ifneq ($(OS),Windows_NT)
+		@chmod -R +x .githooks
+endif
 	@poetry install
 
 shell: