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>

vendor/github.com/stretchr/testify/assert/assertion_compare_can_convert.go

@@ -9,7 +9,7 @@ package assert
 
 import "reflect"
 
-// Wrapper around reflect.Value.CanConvert, for compatability
+// Wrapper around reflect.Value.CanConvert, for compatibility
 // reasons.
 func canConvert(value reflect.Value, to reflect.Type) bool {
 	return value.CanConvert(to)