Add support for Vector DB

[yashbonde]

Adding support for storage would give chainfury an infinite breathing room for storing and processing information.

We plan to add the following in the first iteration:

• qdrant
• pinecone
• milvus

I am planning that it will follow the same kind of registry pattern that we follow across the chainfury. Note that I am giving a very high level overview here so focus more on the interface not the implementation.

class CFDB:
  # some constants
  VECTOR_TYPE = "vector"
  SQL_TYPE = "sql"

  def read(self, *args, **kwargs) -> Dict[str, List[str]]
  def write(self, *args, **kwargs) -> bool?

  # ser/deser
  def from_dict(self, data: Dict[str, Any]) -> CFDB
  def to_dict(self) -> Dict[str, Any]
  def from_json(self, x: str) -> CFDB
  def to_json(self) -> str

class DBRegistry:
  def register(self, name: str, db_cls: CFDB) -> bool?
  def get(self, name: str) -> CFDB

[yashbonde]

#153 adds support for qdrant!