Added additional keys to Message::getHeaders() to make full HTTP status line details available to Client::getHeaders().

[zmoddynamics]

Adds 3 new header keys to $headerCollection.

1. 'http-status-line': The full status line (ie. 'HTTP/1.1 200 OK')
2. 'http-version': The http version returned from the server (ie. 'HTTP/1.1')
3. 'http-status-code-reason-phrase': The status line without the HTTP version (ie. '200 OK')

Q	A
Is bugfix?	no
New feature?	yes
Breaks BC?	no
Tests pass?	yes
Fixed issues	#204

[yii-bot]

Thank you for putting effort in the improvement of the Yii framework.
We have reviewed your pull request.

In order for the framework and your solution to remain stable in the future, we have a unit test requirement in place. Therefore we can only accept your pull request if it is covered by unit tests.

Could you add these please?

Thanks!

P.S. If you have any questions about the creation of unit tests? Don't hesitate to ask for support. More information about unit tests

This is an automated comment, triggered by adding the label pr:request for unit tests.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.17%. Comparing base (9e4b99a) to head (80aa005).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #205      +/-   ##
============================================
+ Coverage     98.14%   98.17%   +0.03%     
- Complexity      268      269       +1     
============================================
  Files            16       16              
  Lines           756      769      +13     
============================================
+ Hits            742      755      +13     
  Misses           14       14              

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