Add tuner tag to AudioToCVPitch.

plugins/Cardinal/plugin.json

@@ -171,6 +171,7 @@
       "description": "Converts a monophonic audio signal to CV pitch",
       "manualUrl": "https://github.com/DISTRHO/Cardinal/blob/main/docs/CARDINAL-MODULES.md#audio-to-cv-pitch",
       "tags": [
+        "Tuner",
         "Utility"
       ]
     },