Add GoSRT & improvements (repo-merge)

Commits (Ingo Oppermann):
- Add experimental SRT connection stats and logs
- Hide /config/reload endpoint in reade-only mode
- Add SRT server
- Create v16 in go.mod
- Fix data races, tests, lint, and update dependencies
- Add trailing slash for routed directories (datarhei/restreamer#340)
- Allow relative URLs in content in static routes

Co-Authored-By: Ingo Oppermann <57445+ioppermann@users.noreply.github.com>

ffmpeg/skills/v4l2.go

@@ -10,8 +10,6 @@ import (
 
 // DevicesV4L returns a list of available V4L devices
 func DevicesV4L() ([]HWDevice, error) {
-	devices := []HWDevice{}
-
 	buf := bytes.NewBuffer(nil)
 
 	cmd := exec.Command("v4l2-ctl", "--list-devices")
@@ -19,7 +17,7 @@ func DevicesV4L() ([]HWDevice, error) {
 	cmd.Stdout = buf
 	cmd.Run()
 
-	devices = parseV4LDevices(buf)
+	devices := parseV4LDevices(buf)
 
 	return devices, nil
 }