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/invopop/jsonschema/utils.go

@@ -0,0 +1,18 @@
+package jsonschema
+
+import (
+	"regexp"
+	"strings"
+)
+
+var matchFirstCap = regexp.MustCompile("(.)([A-Z][a-z]+)")
+var matchAllCap = regexp.MustCompile("([a-z0-9])([A-Z])")
+
+// ToSnakeCase converts the provided string into snake case using dashes.
+// This is useful for Schema IDs and definitions to be coherent with
+// common JSON Schema examples.
+func ToSnakeCase(str string) string {
+	snake := matchFirstCap.ReplaceAllString(str, "${1}-${2}")
+	snake = matchAllCap.ReplaceAllString(snake, "${1}-${2}")
+	return strings.ToLower(snake)
+}