Make everything less 'rp' based & give more customization to server owners.
Also adds how to use the FiveM convars.
Adds:
voice_enableProximityCycle - Enables the usage of the F11 proximity key, if disabled players are stuck on the first proximity (default: 1)
voice_enableRadios - Enables the radio sub-module (default: 1)
voice_enablePhones - Enables the phone sub-module (default: 1)