Add windows supported SDKs to powershell checkout-deps (#1116)

.sh version has this bit:

```
if [ $ismac -eq 0 ]; then
  # Add these SDKs for Windows or Linux
  sdks+=( orangebox blade episode1 bms )

  # Add more SDKs for Windows only
  if [ $iswin -eq 1 ]; then
    sdks+=( darkm swarm bgt eye contagion )
  fi
fi
```

Added these to the SDK list.

tools/checkout-deps.ps1

@@ -18,7 +18,17 @@ param(
         'tf2',
         'insurgency',
         'sdk2013',
-        'dota'
+        'dota',
+        'orangebox',
+        'blade',
+        'episode1',
+        'bms',
+        'darkm',
+        'swarm',
+        'bgt',
+        'eye',
+        'contagion',
+        'doi'
         )
 )
 
@@ -78,4 +88,4 @@ Checkout-Repo -Name "ambuild" -Branch "master" -Repo "https://github.com/alliedm
 Set-Location ambuild
 & python setup.py install
 
-Set-Location ..
+Set-Location ..