SendGrid ServiceProvider Overload

[cmeyertons]

trafficstars

What this PR does / why we need it:

Adds an IServiceProvider overload for configuring SendGrid to allow for ApiKey to be pulled from DI (via options pattern, etc)

Which issue(s) this PR fixes:

Please reference the issue this PR will close: #2300

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Not really, no breakages, just a new overload

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• [x] Code compiles correctly
• [x] Created/updated tests
• [x] Unit tests passing
• [x] End-to-end tests passing
• [x] Extended the documentation - n/a?
• [x] Provided sample for the feature - tests are the sample?

[cmeyertons]

idk who approved the workflow previously, but thank you 😄

I have updated the public api txt file

[cmeyertons]

can i get this merged?

[codecov-commenter]

:warning: Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 64.02%. Comparing base (4a49dfa) to head (f2ac47f). Report is 41 commits behind head on master.

:exclamation: Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2301      +/-   ##
==========================================
- Coverage   64.25%   64.02%   -0.24%     
==========================================
  Files         248      247       -1     
  Lines        8399     8291     -108     
  Branches      590      574      -16     
==========================================
- Hits         5397     5308      -89     
+ Misses       2853     2839      -14     
+ Partials      149      144       -5     

Flag	Coverage Δ
SendGrid	17.21% <100.00%> (+4.02%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.