Add NetBird update scripts and README

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -0,0 +1,17 @@
+# oneliners
+
+Small bash scripts meant to be run directly from the web.
+
+Read a script before you pipe it to bash.
+
+## NetBird client update
+
+```bash
+curl -fsSL https://git.fosil.eu/oier/oneliners/raw/branch/main/update-netbird-client.sh | bash
+```
+
+## NetBird server update
+
+```bash
+curl -fsSL https://git.fosil.eu/oier/oneliners/raw/branch/main/update-netbird-server.sh | bash
+```