Refactor UnitSpecific info => AllUnitParams type union (#701)

## Description:

By using a type union we get better type safety, enforcing each unit
type have the appropriate params when initializing

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

## Please put your Discord username so you can be contacted if a bug or
regression is found:
evan

---------

Co-authored-by: evan <openfrontio@gmail.com>

src/client/ClientGameRunner.ts

@@ -239,6 +239,7 @@ export class ClientGameRunner {
           this.lobby.gameStartInfo.gameID,
           this.lobby.clientID,
         );
+        console.error(gu.stack);
         this.stop(true);
         return;
       }