make basic audio engine parameters configurable

src/ConfigInterface.h

@@ -2,6 +2,17 @@
 #pragma once
 
 #include <string>
+#include <vector>
+
+enum class ConfigFile {
+    Audio = 0
+    // other files here
+};
+
+// might have a config file for specifying paths to other config files instead of this
+const std::vector<std::string> filePaths = {
+    "audio.yaml"
+};
 
 class ConfigInterface {
 
@@ -10,9 +21,10 @@ public:
     ConfigInterface();
     ~ConfigInterface() = default;
 
+    int getValue(ConfigFile file, std::string key, int defaultVal);
+
 private:
 
     const std::string configRoot = "config";
-    const std::string filename = "audio.yaml";
 
 };