Add SCHEDULE to GHEvent and add UNKNOWN handling to GHEvent

[gsmet]

SCHEDULE is a valid event for scheduled workflow runs.

Also make GHEvent parsing more permissive as per our discussion from the previous weeks.

[codecov]

Codecov Report

Merging #1096 (6efe428) into master (e66a723) will increase coverage by 0.02%.
The diff coverage is 85.71%.

@@             Coverage Diff              @@
##             master    #1096      +/-   ##
============================================
+ Coverage     72.80%   72.82%   +0.02%     
- Complexity     1813     1814       +1     
============================================
  Files           185      185              
  Lines          6078     6083       +5     
  Branches        366      366              
============================================
+ Hits           4425     4430       +5     
  Misses         1432     1432              
  Partials        221      221              

Impacted Files	Coverage Δ	Complexity Δ
src/main/java/org/kohsuke/github/GHEventInfo.java	75.00% <0.00%> (ø)	10.00 <0.00> (ø)
src/main/java/org/kohsuke/github/GHEvent.java	100.00% <100.00%> (ø)	3.00 <0.00> (ø)
...rc/main/java/org/kohsuke/github/GHWorkflowRun.java	83.09% <100.00%> (ø)	34.00 <1.00> (ø)
...in/java/org/kohsuke/github/internal/EnumUtils.java	100.00% <100.00%> (ø)	3.00 <1.00> (+1.00)

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[bitwiseman]

Great!
Could you also update GHEventInfo#getType()?

[gsmet]

@bitwiseman I added two commits:

• the first one returns UNKNOWN in GHEventInfo.getType but I haven't changed the logic as it's doing some manipulation we don't do in EnumUtils (and they look a bit too aggressive to be a good fit for a general purpose util)
• I added a log warning if we don't find a value. This way, we can get some feedback about the values that should be added in GitHub API.

[bitwiseman]

Ugh, I see the problem now. All this is to handle the completely different strings used in the REST API and actual event calls.
https://github.com/hub4j/github-api/blob/master/src/test/resources/org/kohsuke/github/AppTest/wiremock/testEventApi/__files/events-10.json#L283

There's got to be a better way to do this. I'll file an issue to come back to this.