feat(main): Add base theme: This is the falcon theme out of the box.

This is falcon v3.1.2

falcon/Makefile

@@ -0,0 +1,22 @@
+build-module-zip: create-env build-assets build-zip
+
+build-zip:
+	rm -rf falcon.zip
+	cp -Raf $(PWD) /tmp
+	rm -rf /tmp/falcon/assets/cache
+	rm -rf /tmp/falcon/_dev/node_modules
+	rm -rf /tmp/falcon/_dev/webpack/.env
+	rm -rf /tmp/falcon/.github
+	rm -rf /tmp/falcon/.gitignore
+	rm -rf /tmp/falcon/.php-cs-fixer.cache
+	rm -rf /tmp/falcon/.git
+	mv -v /tmp/falcon $(PWD)/falcon
+	cd falcon && zip -r ../falcon.zip .
+	rm -rf $(PWD)/falcon
+
+create-env:
+	cp -v $(PWD)/_dev/webpack/.env-example $(PWD)/_dev/webpack/.env
+
+build-assets:
+	cd _dev && . ${HOME}/.nvm/nvm.sh && nvm install && yarn install && yarn build
+