cli fails when workflow names aren't unique

[doc-han]

Description

Apparently, multiple workflows in the same project could have the same name.
This causes the id(slugified string) generated for the colliding workflows to be the same.

Example:
A simple workflow (a-simple-workflow)

• step 1
• step 2

A simple workflow (a-simple-workflow)

• step 2
• step 3

With this setup. Searching for step 3 in the second workflow will actually perform the search in the first workflow where it doesn't exist.

Proposed solution.

When creating id(slugified string) for the workflows. we first search whether the workflow already exists, and if so we suffix it with a count.
With this we'll have

A simple workflow (a-simple-workflow)
A simple workflow (a-simple-workflow-1)