Add Aerospike integration

[lyndonbauto]

Summary

• Adds Aerospike to the ADK integrations catalog via adk-aerospike.
• Documents all three Python storage interfaces: AerospikeSessionService, AerospikeArtifactService, and AerospikeMemoryService.
• Includes catalog card asset and examples for session-only, all three services, and adk web with aerospike:// URIs.

Test plan

• mkdocs serve locally — Aerospike card appears on https://adk.dev/integrations/ (Data filter)
• Integration page renders at /integrations/aerospike/ with tabbed code samples
• Catalog icon loads from /integrations/assets/aerospike.png

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[google-cla]

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[lyndonbauto]

In draft form until I get our legal team to review and sign the CLA.

[koverholt]

Thanks for the PR and the heads up! We will hold off on review until you move to Ready to Review state.

[lyndonbauto]

CLA has been signed — please re-run the cla/google check.

[lyndonbauto]

@koverholt Hey! I got the CLA piece done now, just had to force push a couple times to figure out how it wanted it formatted.

[lyndonbauto]

@koverholt @joefernandez Hi! Just bumping in case this PR got lost since it's a bit old now :)

Looking forward to getting our integration known!