Forte CV data support

[hepengfe]

Describe the bug
Current forte ontology missing CV components.

To Reproduce

Expected behavior
It requires several parts to be implemented.

1. DataPack operations on both image annotation and payload
   • Plus, we need to have add_image_entry() method w.r.t add_entry() as add_image_entry() involved with adding both ImageAnnotation and image payload.
2. ImageAnnotation and Grids class in forte/data/ontology/top.py
3. CV ontologies classes such as BoundingBox, Contour, Edge in forte/ontology_specs/base_ontology.json

Roadmap:

• 1. implement basic ImageAnnotation, Grids and Payloads class variables in DataPack to hold data. In test file, after adding data in a hard-coded way, the test implemented operations on the three data. DataPack basic operations on ImageAnnotations, Image Payload and Grids #795, target at milestone 0.3alpha
• 2. implement BoundingBox entries and methods to compute boundingbox overlaps Create a Bounding Box ontology and an IOU computation function #802, target at milestone 0.3alpha
• 3. implement image entry related methods such as add_image_entry methods in DataPack, target at milestone 0.4
• 4. CV ontologies classes such as Contour, Edge in forte/ontology_specs/base_ontology.json, target at milestone 0.4
• 5. sparse matrix representation, target at milestone 0.4

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Environment (please complete the following information):

• OS: [e.g. iOS]
• Version [e.g. 22]
• Python and Package verions: [e.g. Python version, Pytorch version]

Additional context
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