add Crystal Engine

[diedyesterdaywastaken]

SteamDB app page links to a few games using this

• Deus Ex: Human Revolution
• Deus Ex: Human Revolution - Director's Cut
• Lara Croft and the Guardian of Light
• Lara Croft and the Temple of Osiris
• Marvel's Avengers
• Rise of the Tomb Raider
• Shadow of the Tomb Raider
• Tomb Raider (2013)
• Tomb Raider: Anniversary
• Tomb Raider: Legend
• Tomb Raider: Underworld

Brief explanation of the change

The only thing I could do is detect ^bigfile.000.tiger (.tiger not being required), I'll just hope it's enough to detect this and only this

[SteamDB-Tracker]

After running changed rules in this pull request (this bot only tests rules.ini changes):

Changed technologies: Engine.Crystal_Engine

These apps now match: (19) 7000 7030 8000 8009 8030 8140 8150 28050 35130 35150 201280 203160 238010 289690 391220 750920 974630 997070 1358820

Please confirm that all these changed apps are correct.