specifying labels as dict of label:color in datasets.create will cause type error

[NickRothbacher]

Describe the bug Datasets.create type casts labels as list but dataset.serialize_labels requires a dict, not a list.

To Reproduce Steps to reproduce the behavior:

1. get project with project = dl.projects.get(...)
2. create dataset specifying labels dataset = project.datasets.create(..., labels = {'1':(0,0,0)})
3. throws exception AttributeError: 'list' object has no attribute 'items'

Expected behavior projects.datasets.create should accept a dict of label:color pairs, creating a dataset with the specified labels.

Desktop:

• OS: CentOS Linux 7 (fedora type)
• Browser: N/A
• dtlpy Version: 1.39.12