Move remaining util scripts

[danish9039]

Which problem is this PR solving?

• Resolves Reorganize scripts/ folder #6429

Description of the changes

moved scripts

compute-version.sh --> utils/
generate-help-output.sh --> utils/
platforms-to-gh-matrix.sh --> utils/
upload-docker-readme.sh --> build/

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.29%. Comparing base (59b544a) to head (218bbe1).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6472   +/-   ##
=======================================
  Coverage   96.29%   96.29%           
=======================================
  Files         370      370           
  Lines       21170    21170           
=======================================
  Hits        20386    20386           
  Misses        600      600           
  Partials      184      184           

Flag	Coverage Δ
badger_v1	10.75% <ø> (ø)
badger_v2	2.80% <ø> (ø)
cassandra-4.x-v1-manual	16.64% <ø> (ø)
cassandra-4.x-v2-auto	2.73% <ø> (ø)
cassandra-4.x-v2-manual	2.73% <ø> (ø)
cassandra-5.x-v1-manual	16.64% <ø> (ø)
cassandra-5.x-v2-auto	2.73% <ø> (ø)
cassandra-5.x-v2-manual	2.73% <ø> (ø)
elasticsearch-6.x-v1	20.33% <ø> (-0.01%)	⬇️
elasticsearch-7.x-v1	20.40% <ø> (-0.01%)	⬇️
elasticsearch-8.x-v1	20.56% <ø> (ø)
elasticsearch-8.x-v2	2.79% <ø> (-0.01%)	⬇️
grpc_v1	12.40% <ø> (ø)
grpc_v2	9.16% <ø> (ø)
kafka-3.x-v1	10.59% <ø> (ø)
kafka-3.x-v2	2.80% <ø> (ø)
memory_v2	2.80% <ø> (ø)
opensearch-1.x-v1	20.45% <ø> (-0.01%)	⬇️
opensearch-2.x-v1	20.45% <ø> (-0.01%)	⬇️
opensearch-2.x-v2	2.79% <ø> (ø)
tailsampling-processor	0.52% <ø> (ø)
unittests	95.16% <ø> (ø)

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