Add rerun_vrs namespace to utils files

Author: roym899

src/utils.cpp

@@ -1,5 +1,9 @@
 #include "utils.h"
 
-std::string add_quotes(const std::string& str) {
-    return "\"" + str + "\"";
-}
+namespace rerun_vrs {
+
+    std::string add_quotes(const std::string& str) {
+        return "\"" + str + "\"";
+    }
+
+} // namespace rerun_vrs

src/utils.h

@@ -1,5 +1,11 @@
+#pragma once
+
 #include <string>
 
-/// Add double quotes around string
-/// Useful to support arbitary strings as part of entity path in Rerun
-std::string add_quotes(const std::string& str);
+namespace rerun_vrs {
+
+    /// Add double quotes around string
+    /// Useful to support arbitary strings as part of entity path in Rerun
+    std::string add_quotes(const std::string& str);
+
+} // namespace rerun_vrs