User metadata and workflow metadata query

[cretz]

Describe the solution you'd like

Users need to provide certain bits of user metadata that is visible in the UI/CLI. Specifically from a user POV we will start out with:

• Fixed "summary" and "details" on workflow start (includes signal with start and child workflow and scheduled workflows)
• Updateable-within-workflow "current details" string
• Workflow metadata query that includes "current details" above and, if available, information about registered signals/queries/updates
• "summary" on timer start (can serve as "timer ID")

The text format of summary/description is TBD (probably some form of mini markdown). More metadata may be added in the future.

Per-Project Tickets

• API - User metadata on workflows/events for user interface usage api#371
• Server - Attach user metadata from commands to corresponding history events temporal#5857 and TODO link the non-command/event issues
• Go - User metadata and workflow metadata query sdk-go#1565
• Java - MVP support for user meta data on workflows and events  sdk-java#2216 and workflow metadata query sdk-java#2217
• Core - TODO after stable server release
• TypeScript - TODO after Core
• Python - TODO after Core
• .NET - TODO after Core
• PHP - TODO after Go
• Temporal CLI - TODO after Go