Add support for the `ModeratorEvent` sim callback

[Garanas]

Description

The goal is to introduce a new sim callback with the sole responsibility to inform the moderators. At the moment we (ab)use the GiveResourcesToPlayer callback which is also (ab)used by chat messages. Therefore we'll effectively extend the functionality of the following file/class:

• faf-commons-data/src/main/java/com/faforever/commons/replay/ReplayDataParser.java

Checklist

• Create a new class called ModeratorEvent, similar to ChatMessage except that there's no receiver field.
• Create a new private field ModeratorEvents in the ReplayDataParser class. This will be an array list of type ModeratorEvent, just like the chat messages are.
• In the function parseTicks we want to extend the case CMDST_LUA_SIM_CALLBACK to also check for the ModeratorEvent sim callback. The format of the sim callback is as follows:

---@class ModeratorEvent
---@field From number
---@field Message string

And as an example:

{ From: 1, Message: 'killed 50 units' }

These should be parsed and pushed into the previously mentioned private field ModeratorEvents. An (untested) example can be found in: #102

Notes

It may be interesting to also store the active command source in the ModeratorEvent class. If the player in question is not meddling with the callbacks, it should represent the same value as the From field in the callback.