All Wails3 Taskfiles passed -buildvcs=false to go build, which disables
the automatic VCS info embedding Go 1.18+ does by default. As a result
runtime/debug.ReadBuildInfo() returned an empty vcs.revision in our
netbird-ui binary, so the upcoming version.NetbirdCommit() helper from
PR #6263 could not display the git sha for dev builds.
Removed from build:native in all three platform Taskfiles plus the
Windows build:console and the Dockerfile.cross cross-compile script.
go version -m bin/netbird-ui now reports vcs.revision and vcs.modified.
Removes the legacy fyne-based client/ui implementation and renames the
Wails replacement (client/ui-wails) to take its place at client/ui. Go
imports, frontend bindings, CI workflows, goreleaser configs and the
windows .syso icon path are updated to follow the rename.
