Add riscv architecture to api (#229)

[johnoliver]

• WIP add riscv64

• Exclude riscv from test set

Checklist

• You added tests to cover the change
• mvn clean install build and test completes
• You changed or added to the documentation

[karianna]

lgtm

[codecov]

Codecov Report

Merging #230 into master will increase coverage by 0.04%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #230      +/-   ##
============================================
+ Coverage     70.72%   70.76%   +0.04%     
  Complexity      262      262              
============================================
  Files            97       97              
  Lines          2309     2309              
  Branches        276      276              
============================================
+ Hits           1633     1634       +1     
  Misses          524      524              
+ Partials        152      151       -1     

Impacted Files	Coverage Δ	Complexity Δ
...lin/net/adoptopenjdk/api/v3/models/Architecture.kt	100.00% <ø> (ø)	0.00 <0.00> (ø)
...ataSources/persitence/mongo/MongoApiPersistence.kt	80.28% <0.00%> (+1.40%)	0.00% <0.00%> (ø%)

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