feat: Add metadata to UDFs in catalog

[suryatejreddy]

This PR adds support for storing additional metadata with a UDF. It can be used in the following ways:

• Used to store attributes of the UDF (cache=True, batch=True) in the catalog.
• Used during the definition of UDFS for more advanced use cases (HuggingFace).

Design

• Create a new table in the catalog with the columns key, value, and udf_id.
• This PR adds support only for metadata defined using the CREATE statement.

New Syntax

 CREATE UDF FastRCNN
     INPUT  (Frame_Array NDARRAY UINT8(3, 256, 256))
     OUTPUT (Labels NDARRAY STR(10), Bbox NDARRAY UINT8(10, 4))
     TYPE  Classification
     IMPL  'data/fastrcnn.py'
     "KEY" "VALUE";

Testing

Adds test cases.

[gaurav274]

We need to catch any catalog error here