feat: initial ethos addon submission (#319)

* feat: initial ethos addon submission

* chore: Update Addon Metadata

* fix: remove comment in config.json in submodule

* chore: Update Addon Metadata

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Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: flyingeek

.gitmodules

@@ -274,3 +274,7 @@
 [submodule "addons/luasql/module"]
 	path = addons/luasql/module
 	url = https://github.com/saspivey98/luasql-definitions
+[submodule "addons/ethos/module"]
+	path = addons/ethos/module
+	url = https://github.com/flyingeek/ethos-lua-definitions.git
+	branch = luals-addon

addons/ethos/info.json

@@ -0,0 +1,7 @@
+{
+  "$schema": "https://raw.githubusercontent.com/LuaLS/LLS-Addons/main/schemas/addon_info.schema.json",
+  "name": "Ethos Lua (FrSky)",
+  "description": "Definitions for the Ethos Lua API, used in FrSky transmitters.",
+  "size": 75430,
+  "hasPlugin": false
+}