[DOCS] DSB-1116: Reorganize and update GX Cloud deployment and architecture patterns into GX Cloud overview

[rachhouse]

This PR reorganizes and updates the content that formerly comprised the GX Cloud deployment patterns and architecture page.

https://greatexpectations.atlassian.net/browse/DSB-1116

• Description of PR changes above includes a link to an existing GitHub issue
• PR title is prefixed with one of: [BUGFIX], [FEATURE], [DOCS], [MAINTENANCE], [CONTRIB]
• Code is linted - run invoke lint (uses ruff format + ruff check)
• Appropriate tests and docs have been updated

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.88%. Comparing base (1e13ef6) to head (3e6a79f).
Report is 1 commits behind head on develop.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #10345      +/-   ##
===========================================
- Coverage    79.96%   79.88%   -0.09%     
===========================================
  Files          459      459              
  Lines        39976    39976              
===========================================
- Hits         31966    31933      -33     
- Misses        8010     8043      +33     

Flag	Coverage Δ
3.10	66.73% <ø> (ø)
3.10 athena or clickhouse or openpyxl or pyarrow or project or sqlite or aws_creds	?
3.10 aws_deps	?
3.10 big	?
3.10 filesystem	?
3.10 mssql	?
3.10 mysql	?
3.10 postgresql	?
3.10 spark_connect	?
3.10 trino	?
3.11	66.73% <ø> (ø)
3.11 athena or clickhouse or openpyxl or pyarrow or project or sqlite or aws_creds	?
3.11 aws_deps	?
3.11 big	?
3.11 filesystem	?
3.11 mssql	?
3.11 mysql	?
3.11 postgresql	?
3.11 spark_connect	?
3.11 trino	?
3.12	65.35% <ø> (+0.01%)	⬆️
3.12 aws_deps	45.88% <ø> (ø)
3.12 big	54.50% <ø> (ø)
3.12 filesystem	60.99% <ø> (ø)
3.12 mssql	49.97% <ø> (ø)
3.12 mysql	50.03% <ø> (ø)
3.12 postgresql	54.29% <ø> (ø)
3.12 spark	57.80% <ø> (ø)
3.12 spark_connect	46.17% <ø> (ø)
3.12 trino	52.42% <ø> (ø)
3.8	66.75% <ø> (-0.02%)	⬇️
3.8 athena or clickhouse or openpyxl or pyarrow or project or sqlite or aws_creds	55.09% <ø> (ø)
3.8 aws_deps	45.91% <ø> (ø)
3.8 big	54.52% <ø> (ø)
3.8 databricks	47.60% <ø> (ø)
3.8 filesystem	61.00% <ø> (ø)
3.8 mssql	49.96% <ø> (ø)
3.8 mysql	50.02% <ø> (ø)
3.8 postgresql	54.27% <ø> (ø)
3.8 snowflake	?
3.8 spark	57.77% <ø> (ø)
3.8 spark_connect	46.18% <ø> (ø)
3.8 trino	52.41% <ø> (ø)
3.9	66.75% <ø> (ø)
3.9 athena or clickhouse or openpyxl or pyarrow or project or sqlite or aws_creds	?
3.9 aws_deps	?
3.9 big	?
3.9 filesystem	?
3.9 mssql	?
3.9 mysql	?
3.9 postgresql	?
3.9 spark_connect	?
3.9 trino	?
cloud	0.00% <ø> (ø)
docs-basic	52.43% <ø> (ø)
docs-creds-needed	52.71% <ø> (ø)
docs-spark	52.10% <ø> (ø)

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