feature(subtitles): add frog_subtitles addon

README.md

@@ -8,6 +8,13 @@ Point-and-click adventure game developed using Escoria framework and Godot engin
 2) Clone `escoria-demo-game` repo (develop branch)
 3) Create `gymkhana/addons/escoria-core` symlink pointing to `escoria-demo-game/addons/escoria-core`
 
+### Frog Subtitles
+
+Frog Subtitles is a C# plugin which requires some extra steps:
+
+1) Use Godot .Net version
+2) Download .Net SDK v8+ (Ubuntu 24.04: `sudo apt install dotnet-sdk-8.0`)
+3) Build C# solution in Godot: Project -> Tools -> C# -> Create C# solution
 
 ## Video export.
 - 1280 x 720 | 25fps