Add support for conditional scaffolding

[boma96]

Following options are added to the toolkit:

• -n, --name (Specifies names of the tasks and workflows to scaffold)
• -a, --app (Specifies owner apps of the tasks and workflows to scaffold)
• -e, --email (Specifies owner emails of the tasks and workflows to scaffold)
• --no-tasks (Skip task scaffolding)
• --no-workflows (Skip workflow scaffolding)
• --dry-run (Print workflows and task which would be scaffolded if toolkit is ran without this option)

For name, app, and email filters multiple values can be specified e.g. -n A_task1 B_task2.
Name filter supports special character % which matches zero or more characters

When multiple filters of different types are present then AND operation is applied i.e. all filters must be satisfied in order for wf/task to be scaffolded.

[ognjenkatic]

LGTM, but I cannot see where we are setting the value of the dryrun option? Did i miss something ?

[boma96]

LGTM, but I cannot see where we are setting the value of the dryrun option? Did i miss something ?

Forgot about this, will implement

[boma96]

@ognjenkatic Dry run option is implemented, check PR description

[ognjenkatic]

@ognjenkatic Dry run option is implemented, check PR description

Looks good now, merging.