Refactor build/install process

uninstall_ntfy_server.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# Remove configs & rc.d scripts
+rm -rv /usr/local/etc/{ntfy,rc.d/ntfy*}
+
+# Remove binary
+rm -v /usr/local/bin/ntfy
+
+# Remove pid, attachment, and database directories
+rm -rv /var/{run/ntfy,cache/ntfy,lib/ntfy}
+
+# Remove ntfy user
+rmuser -v ntfy