[refactor] Move cassandra implementation to internal package

[mahadzaryab1]

Which problem is this PR solving?

• Towards Move All Storage Packages Under internal #6637

Description of the changes

• This PR moves the implementation from plugin/storage/ to internal/storage/

How was this change tested?

• CI

Checklist

• I have read https://github.com/jaegertracing/jaeger/blob/master/CONTRIBUTING_GUIDELINES.md
• I have signed all commits
• I have added unit tests for the new functionality
• I have run lint and test steps successfully
  • for jaeger: make lint test
  • for jaeger-ui: npm run lint and npm run test

[mahadzaryab1]

@yurishkuro do we want the v1 subdirectory or should it just go under internal/storage/?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.94%. Comparing base (6d8c70e) to head (84572a9).
Report is 32 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6639   +/-   ##
=======================================
  Coverage   95.94%   95.94%           
=======================================
  Files         365      365           
  Lines       20609    20609           
=======================================
  Hits        19774    19774           
  Misses        636      636           
  Partials      199      199           

Flag	Coverage Δ
badger_v1	9.91% <ø> (ø)
badger_v2	1.84% <ø> (ø)
cassandra-4.x-v1-manual	14.92% <ø> (ø)
cassandra-4.x-v2-auto	1.83% <ø> (ø)
cassandra-4.x-v2-manual	1.83% <ø> (ø)
cassandra-5.x-v1-manual	14.92% <ø> (ø)
cassandra-5.x-v2-auto	1.83% <ø> (ø)
cassandra-5.x-v2-manual	1.83% <ø> (ø)
elasticsearch-6.x-v1	19.30% <ø> (ø)
elasticsearch-7.x-v1	19.38% <ø> (ø)
elasticsearch-8.x-v1	19.55% <ø> (ø)
elasticsearch-8.x-v2	1.84% <ø> (ø)
grpc_v1	10.89% <ø> (ø)
grpc_v2	7.88% <ø> (ø)
kafka-3.x-v1	10.21% <ø> (ø)
kafka-3.x-v2	1.84% <ø> (ø)
memory_v2	1.84% <ø> (ø)
opensearch-1.x-v1	19.43% <ø> (ø)
opensearch-2.x-v1	19.43% <ø> (ø)
opensearch-2.x-v2	1.84% <ø> (ø)
tailsampling-processor	0.48% <ø> (ø)
unittests	94.83% <ø> (ø)

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[yurishkuro]

lgtm. Please check if the docs have links to the old location.

[mahadzaryab1]

lgtm. Please check if the docs have links to the old location.

Don't see anything else

[yurishkuro]

Don't see anything else

I mean in the docs repo, e.g.

content/docs/1.40/deployment.md
418:MODE=test sh ./plugin/storage/cassandra/schema/create.sh | cqlsh
734:For more information, please refer to [jaeger/plugin/storage/grpc](https://github.com/jaegertracing/jaeger/tree/master/plugin/storage/grpc).
829:[storage.proto]: https://github.com/jaegertracing/jaeger/blob/main/plugin/storage/grpc/proto/storage.proto

[mahadzaryab1]

Don't see anything else

I mean in the docs repo, e.g.

content/docs/1.40/deployment.md
418:MODE=test sh ./plugin/storage/cassandra/schema/create.sh | cqlsh
734:For more information, please refer to [jaeger/plugin/storage/grpc](https://github.com/jaegertracing/jaeger/tree/master/plugin/storage/grpc).
829:[storage.proto]: https://github.com/jaegertracing/jaeger/blob/main/plugin/storage/grpc/proto/storage.proto

Ah okay - I can fix that