Make google API key configurable

Hi @bramdriesen,

I have added the required field to config the Google Maps API key on the web/themes/custom/conference_lite-3509419/theme-settings.php, under the 3rd party integrations section. The configuration is being properly saved and fetched.

I am attaching screenshot for reference. Please have a look and let me know if any changes required here.
Thanks !

Hello @lavanyatalwar,
I have tested your changes over the theme and it seems its fine and working as expected

moving the issue to RTBC and lets wait for some more feedback