Verify configured binding exit type matches requirements

[jfallows]

Describe the desired outcome from the user's perspective As devops, I want feedback when configuring zilla to make sure bindings connected together make sense according to stream types.

Acceptance criteria

• Log a warning if configured exit binding type is not compatible with required type

Additional context For example, if sse client is configured to exit to something other than http typed stream, then it is incompatible and should log a warning.

Depends on #930