(docs) add example brick

bricks/example.brick

@@ -0,0 +1,34 @@
+#!/bin/sh
+# example brick
+# made by alice
+# GPL3 only
+# uwu
+
+# this 2 lines are to prevent it from being installed
+errcho '`example` brick is not an installable brick, its for packaging reference only'
+exit 1
+
+info() {
+	echo this brick does this and that
+}
+
+license() {
+	echo GPL3
+}
+
+repo() {
+	echo https://github.com/example/example.git
+}
+
+pkgs() {
+	# as in pacman -S sh curl
+	echo sh curl
+}
+
+install() {
+	sh -c "$(curl https://example.com/script.sh)"
+}
+
+uninstall() {
+	rm -fr ~/.example_pkg
+}