Change IssueSetCommandByName API signature to support object type and remove IssueSetCommandByNameWithObject

[lenny-goodell]

🚀 Feature Request

Relevant Package [REQUIRED]

This feature request is for Command Client

Description [REQUIRED]

`IssueSetCommandByNameWithObject` was created to support objects w/o breaking the API. In next major release, `IssueSetCommandByName` should be updated to support object type so `IssueSetCommandByNameWithObject` can be removed.

Describe the solution you'd like

Change `IssueSetCommandByName` API signature so `settings` parameter type is `map[string]interface{}`

Describe alternatives you've considered

Have you considered any alternative solutions or workarounds?