ripgrep: Add a configuration file

Primarily contains things we want to be ignored by ripgrep for now.
We had been including these in gitignore which was not really correct.

ripgrep/.config/ripgrep/ripgreprc

@@ -0,0 +1,13 @@
+--glob=!git/*
+--glob=!*/gst-docs/*
+--glob=!hotdoc-*/
+--glob=!*/gstreamer-sharp/*
+--glob=!ChangeLog
+--glob=!*girs/*
+--glob=!*.po
+--glob=!*.json
+--glob=!*.lock
+--glob=!node_modules/*
+--glob=!mediasoup/*
+--glob=!mediasoup-*/
+--glob=!north-star/