Adds a few new filters and changing excisting ones.

You can search for lobbies in different matchmaking keys ----- This will help people see who is playing different gameplay overhaul or even older game versions without leaving the game. You can even enter your own matchmaking key to search for if yours is not in the list. Added support for following mods: * [Restoration Mod](https://modworkshop.net/mod/428) * [Crackdown](https://modworkshop.net/mod/21631) * [Hyper Heising](https://modworkshop.net/mod/24337) * [Streamlined Heisting](https://modworkshop.net/mod/29713) * [Classic Heisting](https://modworkshop.net/mod/33768)

Their matchmaking keys determines from their github repositories. So keys most of the time will be up to date.
You can search lobbies by the owner's nickname.

Simply type a nickname and set on "Search by a nickname". Case of the characters does not matter.

Difficulty Range

You can set the difficulty radius to filter contracts by multiple difficulties depending on the selected difficulty. Greater than, less than, or equal to.
For those people who don't mind to play on different difficulties.

And few more features

• Allow One Down Lobbies, Allow Mutated Lobbies and Allow Mutated Lobbies - changed from toggle to multichoice. Allowing you to search for contracts with this setting only.
• Host Level filter can exclude contracts with low level hosts.
• Added two new options for Tactics filter - "Exclude Stealth" and "Exclude Loud".