feat: Add support for setting custom fields on releases

[geofflamrock]

Context

We are adding support for Custom Fields on releases as part of the new Ephemeral Environments feature coming to Octopus. This will allow custom key/value data to be stored on a release and used as part of naming automatically created ephemeral environments from releases. Channels can define which custom fields are required for releases created.

Changes

Adds support for setting custom fields when creating releases.

• When running interactively, each custom field defined on the selected channel will be prompted for the user to enter a value.
• An option --custom-field can be used to supply any values when running non-interactively with a format of name:value.

Needs OctopusDeploy/go-octopusdeploy#359 to be merged to make type changes available.

[sc-113197]

[stevencl840]

Looks good. Is the error in the code due to the library needing its changes merged?

[geofflamrock]

Looks good. Is the error in the code due to the library needing its changes merged?

@stevencl840 Yeah it won't compile in CI until OctopusDeploy/go-octopusdeploy#359 merges