Simple volume meter widget

Latest translations from CrowdIn

I didn't understand how tags worked so I was trying to filter it out
when I should really be using it for the actual version string.

Instead, just use separate version and download entries.

Latest translations from CrowdIn

Also use lightweight tags for git describe

No need to give it a name other than the empty string

These functions match the known obs locales with the system supplied
locales and return a vector of possible locales with the highest
priority locale first

Similar to obs_data_has_(user_value|default|autoselect), these allow
library users to distinguish between user config values and default
values