Move ParseQuery from ffmpeg to streams module

internal/streams/helpers.go

@@ -0,0 +1,19 @@
+package streams
+
+import (
+	"net/url"
+	"strings"
+)
+
+func ParseQuery(s string) url.Values {
+	params := url.Values{}
+	for _, key := range strings.Split(s, "#") {
+		var value string
+		i := strings.IndexByte(key, '=')
+		if i > 0 {
+			key, value = key[:i], key[i+1:]
+		}
+		params[key] = append(params[key], value)
+	}
+	return params
+}