[TIMOB-16914]Implementing BuildType for iOS

__Testing instruction.__

Pull down the changes from this PR. 
Scons the SDK. 
Place the following lines inside 
```
KrollBridege.m (around line 71:)
            [APSAnalytics setDebug:YES];
            [APSAnalytics setSessionTimeout:2];
```

This is to enable debugging and make it easier for testing.

Through cli create any app using the newly build SDK.

build it for device using the following command. :
```
ti build -p ios -T device --build-type something -C deviceID
```

Install on device and start app.
Check console log for analytics output in enroll or foreground event
look for `buildtype` variable in the payload

Sample Payload 

```
{
   "mid":"A5878AB7-7000-42F1-84F4-96F2C6DD668D",
   "id":"7058BE88-1C32-4A9E-BB4C-2F6CCEDE81D5",
   "ts":"2014-05-12T22:07:39.789+0000",
   "data":{
      "ostype":"32bit",
      "app_id":"com.appcelerator.buildTYpe",
      "oscpu":2,
      "buildtype":"testing",
      "tz":-420,
      "platform":"iphone",
      "nettype":"WIFI",
      "os":"iphone",
      "app_name":"testingAnalyticsChanges",
      "sdkver":"ti.3.3.0",
      "osarch":"arm64",
      "deploytype":"test",
      "model":"iPhone6,1",
      "app_version":"1.0.0.1399932439159",
      "osver":"7.1"
   },
   "ver":"3",
   "sid":"40986273-0358-4D29-BFB6-7668BF3A1EB4",
   "event":"ti.foreground",
   "aguid":"8936393f-748f-4e85-bac6-97e2ae77e1fb",
   "seq":1
}
```