Ring Syntactic sugar + other updates

[sachaarbonel]

The Ring Individual Members feature enables applications to ring call participants individually or in groups, rather than all at once. This implementation uses the GET call endpoint with specific member IDs to create a more natural calling experience similar to making individual phone calls to conference participants.

The feature allows developers to:

• Ring specific members of a call, one at a time or in groups
• Send targeted notifications to specific members
• Create sophisticated call flow patterns

[codecov]

Codecov Report

Attention: Patch coverage is 89.28571% with 6 lines in your changes missing coverage. Please review.

Project coverage is 90.05%. Comparing base (48296e7) to head (1c9a77d).

Files with missing lines	Patch %	Lines
channel.go	0.00%	4 Missing ⚠️
http.go	90.47%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #29      +/-   ##
==========================================
- Coverage   90.13%   90.05%   -0.08%     
==========================================
  Files          12       12              
  Lines        1703     1750      +47     
==========================================
+ Hits         1535     1576      +41     
- Misses        143      148       +5     
- Partials       25       26       +1     

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