[SR-12225] Improve the XCBuild output parser to show progress

[hartbit]

Previous ID	SR-12225
Radar	rdar://problem/59655506
Original Reporter	@hartbit
Type	Task

Additional Detail from JIRA

Votes	0
Component/s	Package Manager
Labels	Task
Assignee	None
Priority	Medium

md5: 0d45d5af86f5a314c9ddde46805b026c

Issue Description:

[hborla]

@swift-ci create