Add Smart Display sample

[compulim]

This PR requires #2648.

Fixes #2699. Fixes #2700.

Changelog Entry

Samples

• Smart Display, by @compulim, in PR #2649

Description

Add a new sample for composing Web Chat UI into a Smart Display.

This sample will be later updated to use Direct Line Speech channel.

Specific Changes

• Moved WebSpeechPonyfill patching code from <BasicTranscript> to <Composer>

  • Components using Web Chat without our default UI, will continue to get the patched WebSpeechPonyfill.
  • The patch is to coalesces null ponyfill, into a naive/bypass ponyfill.

• Moved <SayComposer> from <BasicTranscript> to <Composer>

  • Components using Web Chat without our default UI, will be able to use <SpeakActivity>.

• Adopted the following packages because they do not provide ES5 builds. License will be keep in the source code.

  • abort-controller@3.0.0
  • p-defer@3.0.0

• When running under a browser without Web Audio API support (e.g. IE11), will disable speech recognition and synthesis in Direct Line Speech and give warnings.

• Added new sample for Direct Line Speech with ES5.

• Added new Smart Display sample.

---

• Testing Added
  • Will do manual tests
• Bump Speech SDK to official 1.8.1 on NPM
• README.md for 01.d

[coveralls]

Coverage decreased (-2.7%) to 60.848% when pulling c6f9714 on compulim:sample-smart-display2 into 5b2e0c2 on microsoft:master.

[corinagum]

Approved, pending comments :)