[TIMOB-12169] Create build log with compilation

Resolves https://jira.appcelerator.org/browse/TIMOB-12169
That call returns `undefined` as `cli.argv.platform` is undefined. As I noted above, everything here is called once per supported platform. So even if I try to read the `this.platformName` value I get `android` as the value for the first iteration when using `ti build -p ios` as my command. (My default app for testing supports android,iphone,mobileweb as build targets).