Adds CodeTalk Profiler

[afrozas]

This PR adds the implementation to CodeTalk Audio Profiler for Debugging.

Two major additions are:

• A new class of TalkPoints called Profile Points is introduced, which is aimed at enabling visually impaired developers profile code in any language.
• An accessible WebView that allows the VI developer to do several operations in a profiling session that has been initialized using ProfilePoints.

Please merge this in a new branch; the head repository is on profiler branch. @gopalrs @suiyengar

[msftclas]

All CLA requirements met.