Language bindings, KDE thumbnails, yapf compare, in-memory encoding

- yapf_encode() / yapf_free_buffer(): encode to memory; yapf_save uses it
- yapf.c also compiles as C++
- `yapf compare`: size and decode speed of the original format vs YAPF,
  with a lossless check
- bindings with tested examples: C++ (header-only), C# (P/Invoke),
  Rust (crate, builds the C code), Go (cgo), Java (FFM API, Java 22+),
  Zig (@cImport), LuaJIT (FFI), TypeScript types for the JS port;
  Python now encodes in memory
- docs/LANGUAGES.md and examples/ with measured results
- KDE Dolphin thumbnail plugin (KF6, CMake)
- README: honest status for Photoshop / VS Code / Figma (not run in the
  apps yet) and macOS (cross-compiled only), platform table

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

bindings/go/README.md

@@ -0,0 +1,17 @@
+# YAPF for Go
+
+A cgo package that builds the C library itself (needs a C compiler, as any
+cgo package).
+
+```sh
+go get github.com/Nexoniarz/YAPF/bindings/go
+```
+
+```go
+import yapf "github.com/Nexoniarz/YAPF/bindings/go"
+
+img, err := yapf.Load("texture.yapf")           // or yapf.Decode(bytes)
+data, err := yapf.Encode(&yapf.Image{Width: 256, Height: 256, Channels: 4, Pixels: rgba})
+```
+
+Example: `go run ./example ../../other/YAPF.YAPF` · tests: `go test`.