Show start-dev feature overrides in startup banner

[chaptersix]

Related issues

Stacked on saa-dynamic-config-overrides.

What changed?

• Add feature names and lifecycle designations to the validated temporal server start-dev feature override list.
• Print each feature override, its configured value, and whether it is built in or user supplied in the startup banner.
• Keep user-provided --dynamic-config-value values visible as the effective configured value.

Checklist

Design

• This feature does not depend on Cloud-only APIs or behavior.

Tests

• Added unit coverage for feature metadata.
• Added functional banner coverage for built-in and user-provided values.

Validation

go test ./internal/devserver ./internal/temporalcli \
  -run 'Test(StartDevServerFeatureOverridesMatchServerDefaults|Server_StartDev_BannerPersistenceInMemory)$' \\\n  -count=1\n```