Update .gitignore to exclude WARP.md

Update .gitignore file to exclude optimization file generated by Warp
terminal, called WARP.md

Author: n01r

.gitignore

@@ -62,6 +62,11 @@ cmake-build-*/
 ##########
 .vscode
 
+#################
+# Warp terminal #
+#################
+WARP.md
+
 # File-based project format:
 *.iws