Add CRD manifests for consumers scheduling and scaling

[pierDipi]

Part of #1537

Proposed Changes

• Add CRDs manifests for consumers scheduling and scaling
  (No need to have any open API schema for this CRD)

Release Note

None

Docs

None

[codecov]

Codecov Report

Merging #1637 (45ac3d5) into main (348d679) will decrease coverage by 0.09%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main    #1637      +/-   ##
============================================
- Coverage     72.62%   72.53%   -0.10%     
  Complexity      596      596              
============================================
  Files           120      120              
  Lines          4428     4428              
  Branches        171      171              
============================================
- Hits           3216     3212       -4     
- Misses          950      953       +3     
- Partials        262      263       +1     

Flag	Coverage Δ
java-unittests	81.80% <ø> (-0.21%)	⬇️

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

Impacted Files	Coverage Δ
...e/eventing/kafka/broker/core/file/FileWatcher.java	75.64% <0.00%> (-5.13%)	⬇️

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[pierDipi]

/test pull-knative-sandbox-eventing-kafka-broker-integration-tests

[aavarghese]

/lgtm

[knative-prow-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aavarghese, pierDipi

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