Add Two Tier to Capture

It's an awesome map. IMO same quality as RFV2 and Golden Drought.

[maps.oc.tc/CTW/Standard/Two Tier/](https://maps.oc.tc/CTW/Standard/Two%20Tier/)
[oc.tc/forums/topics/5272b91daf7fb093bd001dc7](https://oc.tc/forums/topics/5272b91daf7fb093bd001dc7)