Add a Fyne frontend for xC

It is fairly mediocre all around, but also generally usable,
natively covering mobile platforms.

xA/go.mod

@@ -0,0 +1,41 @@
+module janouch.name/xK/xA
+
+go 1.23
+
+require (
+	fyne.io/fyne/v2 v2.5.2
+	github.com/ebitengine/oto/v3 v3.3.1
+)
+
+require (
+	fyne.io/systray v1.11.0 // indirect
+	github.com/BurntSushi/toml v1.4.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/ebitengine/purego v0.8.1 // indirect
+	github.com/fredbi/uri v1.1.0 // indirect
+	github.com/fsnotify/fsnotify v1.8.0 // indirect
+	github.com/fyne-io/gl-js v0.0.0-20230506162202-1fdaa286a934 // indirect
+	github.com/fyne-io/glfw-js v0.0.0-20240101223322-6e1efdc71b7a // indirect
+	github.com/fyne-io/image v0.0.0-20240417123036-dc0ee9e7c964 // indirect
+	github.com/go-gl/gl v0.0.0-20231021071112-07e5d0ea2e71 // indirect
+	github.com/go-gl/glfw/v3.3/glfw v0.0.0-20240506104042-037f3cc74f2a // indirect
+	github.com/go-text/render v0.2.0 // indirect
+	github.com/go-text/typesetting v0.2.0 // indirect
+	github.com/godbus/dbus/v5 v5.1.0 // indirect
+	github.com/gopherjs/gopherjs v1.17.2 // indirect
+	github.com/jeandeaual/go-locale v0.0.0-20240223122105-ce5225dcaa49 // indirect
+	github.com/jsummers/gobmp v0.0.0-20230614200233-a9de23ed2e25 // indirect
+	github.com/nicksnyder/go-i18n/v2 v2.4.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/rymdport/portal v0.3.0 // indirect
+	github.com/srwiley/oksvg v0.0.0-20221011165216-be6e8873101c // indirect
+	github.com/srwiley/rasterx v0.0.0-20220730225603-2ab79fcdd4ef // indirect
+	github.com/stretchr/testify v1.9.0 // indirect
+	github.com/yuin/goldmark v1.7.8 // indirect
+	golang.org/x/image v0.22.0 // indirect
+	golang.org/x/mobile v0.0.0-20241108191957-fa514ef75a0f // indirect
+	golang.org/x/net v0.31.0 // indirect
+	golang.org/x/sys v0.27.0 // indirect
+	golang.org/x/text v0.20.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)