Add ability to launch custom lobby to launch script

[lL1l1]

Description of the proposed changes

• Add -toLobby arg for launch script to launch into custom lobby. This allows testing the custom lobby and gives easy access to testing mod/ruleset setups.
• With the /debugLobby command line arg for the game, players in the custom lobby are preset as ready so that the game can be launched quickly.

Testing done on the proposed changes

Running .\scripts\LaunchFAInstances.ps1 -players 3 -toLobby and it launches 3 players successfully.

I was able to launch 4 players only once, other times it mostly failed.

Possible improvements

The fastest way to test rule/mod setups would be to have an easy way to launch the autolobby with custom rules/mods (1 click -> 0 click).

Checklist

• Changes are annotated, including comments where useful
• Changes are documented in a changelog snippet according to the guidelines.
• Request 2-3 reviewers from the list of reviewers and their areas of knowledge.