Update cheatsheets

tldr/openrgb

@@ -0,0 +1,25 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# openrgb
+
+> Control RGB lighting.
+> More information: <https://gitlab.com/OpenRGBDevelopers/OpenRGB-Wiki/-/blob/stable/User-Documentation/Using-OpenRGB.md>.
+
+- Start the OpenRGB GUI:
+
+`openrgb`
+
+- List devices supported by OpenRGB:
+
+`openrgb --noautoconnect {{[-l|--list-devices]}}`
+
+- Set the mode and color of a device:
+
+`openrgb {{[-m|--mode]}} {{off|static|breathing|rainbow|flashing|...}} {{[-c|--color]}} {{random|red|00AAFF|...}}`
+
+- Display help:
+
+`openrgb {{[-h|--help]}}`