Configurable duration suspend template

[elliotgunton]

Is your feature request related to a problem? Please describe. When creating a suspend template using Hera's Suspend class, there is no way to set the duration according to an input parameter.

Describe the solution you'd like An option to pass in the duration for the Suspend template. This could be adding the IOMixin to Suspend.

Describe alternatives you've considered The functionality already exists when using the Argo models, see #764.

An alternative feature in the Hera class could be a boolean of input_duration where if true, an input parameter called duration is available to set when the template is called (however this is not very transparent).

[flaviuvadan]

An option to pass in the duration for the Suspend template. This could be adding the IOMixin to Suspend.

Def support this @elliotgunton!