Support adding a row from a template

[ITAYC0HEN]

Hey :wave: This pull request implements a naive way to add a new row to a collection where its origin is a template (another block_id).

The implementation is based on a sequence of API calls:

• Enqueue a new task of type duplicateBlock (API: v3/enqueueTask)
• Loop N times every X seconds (or milliseconds) and check the status of the task (API: v3/getTasks)

The usage is very straightforward:

cv = client.get_collection_view("...")
cv.collection.add_row(sourceBlockId="75dd203a-EXAMPLE-a12b-ba492c37a1f6")

And of course, more parameters can be added:

cv.collection.add_row(
    sourceBlockId="75dd203a-EXAMPLE-a12b-ba492c37a1f6",
    name="The Hen House: Episode #123",
    type="Podcast"
)

Note: The v3/getTasks actually supports getting the status of multiple tasks. I used it to get the status of a single one. We can consider improving it to support multiple tasks but didn't find it useful in the current design.

closes #194

[ag0n1k]

Hi there!

My next step is use template on creation, did some CR, if u don't mind. ;)