Add support for the security and analysis webhook event

[byronwolfman]

Fixes#2861

Adds support for the Security and Analysis webhook event which fires whenever security and analysis features are enabled or disabled for a repository.

• Ran go generate
• Ran go test
• Ran go vet
• Signed CLA

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[gmlewis]

Thank you, @byronwolfman !
LGTM.

Awaiting second LGTM+Approval from any other contributor to this repo before merging.

[codecov]

Codecov Report

Merging #2862 (445fe2a) into master (f36dfa5) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@ Coverage Diff @@## master #2862 +/- ##
=======================================
Coverage 98.07% 98.07% =======================================
Files 139 139 Lines 12342 12344 +2 =======================================
+ Hits 12104 12106 +2 
Misses 162 162 Partials 76 76 

Files Changed	Coverage Δ
github/event_types.go	100.00% <ø> (ø)
github/messages.go	100.00% <ø> (ø)
github/event.go	100.00% <100.00%> (ø)

[byronwolfman]

Thank you, @byronwolfman ! LGTM.

Awaiting second LGTM+Approval from any other contributor to this repo before merging.

Thanks, sounds good! And thanks for the clear contributing docs that made it possible to put this together. 🙏 💯

[gmlewis]

Thanks, sounds good! And thanks for the clear contributing docs that made it possible to put this together. 🙏 💯

Thank YOU for reading it! It would be nice if every PR author read it!!! 😂

[byronwolfman]

Good morning! What sort of timeline should we expect for merging, and/or what trees do we need to shake? :D

[gmlewis]

This repo is maintained by volunteers and for this PR we need another contributor to this repo to perform a second code review before this will be merged.

Feel free to request code reviews from other contributors to this repo to move the process along. Thanks.

[byronwolfman]

Gently tagging @jporzucek for review as I see you've done some recent work on security and analysis APIs. 🙏

[jporzucek]

LGTM! 🚀

[gmlewis]

Thank you, @jporzucek !
Merging.

[gmlewis]

cc: @evankanderson - this will also affect #2865. Sorry about that.