Add auth and version support to socks proxy

[AriaMoradi]

closes #785

I didn't test the code against a real proxy but it should be fine according to the docs.

Java 8: https://docs.oracle.com/javase/8/docs/technotes/guides/net/properties.html#socks
Java 20 (much more readable): https://docs.oracle.com/en/java/javase/20/core/java-networking.html#GUID-E0E7F3CF-FF30-4324-B2F8-AA88EB067994

[Syer10]

Looks good, just some general cleanup

[Syer10]

Suggested change

	serverConfig.socksProxyUsername,
	serverConfig.socksProxyPassword,
	) { proxyEnabled, proxyHost, proxyPort, proxyUsername, proxyPassword ->
	data class DataClassForDestruction(
	val proxyEnabled: Boolean,
	val proxyHost: String,
	val proxyPort: String,
	val proxyUsername: String,
	val proxyPassword: String,
	)
	DataClassForDestruction(proxyEnabled, proxyHost, proxyPort, proxyUsername, proxyPassword)
	},
	serverConfig.socksProxyUsername,
	serverConfig.socksProxyPassword,
	) { proxyEnabled, proxyHost, proxyPort, proxyUsername, proxyPassword ->
	data class ProxySettings(
	val proxyEnabled: Boolean,
	val proxyHost: String,
	val proxyPort: String,
	val proxyUsername: String,
	val proxyPassword: String,
	)
	ProxySettings(proxyEnabled, proxyHost, proxyPort, proxyUsername, proxyPassword)
	}.distinctUntilChanged(),

[AriaMoradi]

API says it doesn't need distinctUntilChanged()

[Syer10]

Its just to be safe.

[AriaMoradi]

Might as well add support for socks 4 by providing java's socksProxyVersion