HEVC (and some other small shit)

Overlord-Client/cmd/agent/capture/hevc_encoder_stub.go

@@ -0,0 +1,18 @@
+//go:build !windows
+
+package capture
+
+import (
+	"errors"
+	"image"
+)
+
+func encodeHEVCFrame(_ *image.RGBA) ([]byte, error) {
+	return nil, errors.New("HEVC NVENC is only available on Windows")
+}
+
+func hevcAvailable() bool { return false }
+
+func hevcAvailabilityDetail() string { return "HEVC NVENC is only available on Windows" }
+
+func resetHEVCEncoder() {}