Implement multi-namespace search attribute translation

[pglass]

What was changed

Implement search attribute translation for multiple namespaces.

Why?

Checklist

1. Closes

2. How was this tested:

Similar to steps in #93, but:

• Create 2 replicated namespaces

• In proxy-a, add namespace translation (optional)

  namespaceNameTranslation:
    mappings:
      - localName: "myns"
        remoteName: "myns.cloud"
      - localName: "myns2"
        remoteName: "myns2.cloud"

• In proxy-b configure the search attributes. To discover the search attribute mapping, ~/code/cli/temporal --address localhost:8233 operator namespace describe -n $NS --grpc-meta xdc-redirection=false -o json

  searchAttributeTranslation:
    namespaceMappings:
    - name: "myns.cloud"
      namespaceId: "d3054098-3edb-4242-93e1-dbc15f097cb5"
      mappings:
      - localFieldName: "Keyword06"
        remoteFieldName: "CustomKeywordField"
      - localFieldName: "Text01"
        remoteFieldName: "CustomStringField"
  
    - name: "myns2.cloud"
      namespaceId: "f935a879-2b28-4ea8-9e64-c25f020962fe"
      mappings:
      - localFieldName: "Keyword03"
        remoteFieldName: "CustomKeywordField"
      - localFieldName: "Text01"
        remoteFieldName: "CustomStringField"
  
    - name: "bogus"
      namespaceId: "00001111-0000-1111-0000-111100001111"
      mappings:
      - localFieldName: "Keyword99"
        remoteFieldName: "CustomKeywordField"
      - localFieldName: "Text99"
        remoteFieldName: "CustomStringField"

• Start workers for both namespaces

• Run workflows in both namespaces simultaneously

• Run force replication in both namespaces

• Test handover

• Check that queries with search attributes work on the target cluster, and return same results as source

NS=myns
temporal workflow count -n $NS -q 'CustomKeywordField IS NOT NULL' --grpc-meta xdc-redirection=false
temporal --address localhost:8233 workflow count -n myns2.cloud -q 'CustomKeywordField IS NOT NULL' --grpc-meta xdc-redirection=false

4. Any docs updates needed?

[pglass]

Switch to a Visitor struct so that we can track currentNamespaceId as we recursively descend into struct.

[pglass]

Check for and remember namespace id on each type as we descend.

[pglass]

Special handling for GetWorkflowExecutionRawHistoryV2Response. Carry over the namespace id found in the corresponding request.