feat: make repo releasable, add parent/bom

[codyoss]

No description provided.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@703450b). Click here to learn what that means.
The diff coverage is n/a.

@@           Coverage Diff            @@
##             master      #1   +/-   ##
========================================
  Coverage          ?   70.9%           
  Complexity        ?     240           
========================================
  Files             ?      12           
  Lines             ?    2248           
  Branches          ?      32           
========================================
  Hits              ?    1594           
  Misses            ?     624           
  Partials          ?      30

Impacted Files	Coverage Δ	Complexity Δ
...enter/v1beta1/stub/SecurityCenterStubSettings.java	76.71% <ø> (ø)	29 <0> (?)
...1beta1/stub/GrpcSecurityCenterCallableFactory.java	50% <ø> (ø)	4 <0> (?)
...ter/v1/stub/GrpcSecurityCenterCallableFactory.java	50% <ø> (ø)	4 <0> (?)
.../cloud/securitycenter/v1/SecurityCenterClient.java	49.24% <ø> (ø)	61 <0> (?)
...d/securitycenter/v1beta1/SecurityCenterClient.java	49.24% <ø> (ø)	61 <0> (?)
...ritycenter/v1/stub/SecurityCenterStubSettings.java	76.71% <ø> (ø)	29 <0> (?)

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