Add INIT_ALLOWED_IPS for unattended setup (#2164)

* Add INIT_ALLOWED_IPS env var

Implement INIT_ALLOWED_IPS env var like the INIT_DNS to preset the global Allowed IPs field.

* Docs: Add INIT_ALLOWED_IPS var to unattended setup table

* Make UserConfigService.update param partial

Update UserConfigService.update() to accept any subset of the updatable fields.
Remove the unnecessary userConfig object from  DBService.initialSetup()

* formatting fix

* format on linux

On windows prettier get confused by global conf... common windows things

src/server/utils/config.ts

@@ -38,6 +38,7 @@ export const WG_INITIAL_ENV = {
   DNS: process.env.INIT_DNS?.split(',').map((x) => x.trim()),
   IPV4_CIDR: process.env.INIT_IPV4_CIDR,
   IPV6_CIDR: process.env.INIT_IPV6_CIDR,
+  ALLOWED_IPS: process.env.INIT_ALLOWED_IPS?.split(',').map((x) => x.trim()),
   HOST: process.env.INIT_HOST,
   PORT: process.env.INIT_PORT
     ? Number.parseInt(process.env.INIT_PORT, 10)