Update the runner projects for the reworked plugins. The Windows runner
asks the plugin for the running window before booting a second instance
and forwards a clash:// link through app_links; the Linux runner routes a
relaunch to the primary through GApplication; the macOS delegate forwards
applicationShouldHandleReopen to the plugin. The Linux desktop entries
claim the clash, clashmeta, and flclash schemes, and the rpm spec stops
stripping the Core whose hash the Helper validates.
The runner projects consume the setup build hook's artifacts: macOS drops
the CocoaPods integration and its script phase, pins release ARCHS to the
host, and stages the Core after the hook may have rewritten it; Windows
and Linux copy the Core, Helper and manifest from the CMake install
rules, and a Debug install on Windows stops a Helper that holds its exe
open, matched by executable path so a registered release Helper keeps
running. The deb depends on the appindicator runtime library instead of
its development package, and the keybinder dependency and README lines
go with hotkey_manager.
Changelog: Rework the desktop runners, packaging, and native build
chen08209