[Bug] Missing text_contents in add_contents_async of Knowledge class

[chyhkae]

Description

The args and kwargs in add_contents_async of Knowledge class doesn't support text_contents.

However, in add_content_async support text_content. When you run with add_contents, it will throw the following error:

The text_contents in kwargs or text_content in args is crucial to enable user to add content with text only.

Steps to Reproduce

from agno.vectordb.pgvector import PgVector
from agno.knowledge import Knowledge

vector_db = PgVector(
    table_name="my_table",
    schema="agno",
    db_url=db_url,
    embedder=st_embedder,
    auto_upgrade_schema=False
)
if not vector_db.table_exists():
    vector_db.create()
    
knowledge_base = Knowledge(vector_db=vector_db)
contents = [{"text_content": "test1"}, {"text_content": "test2"}]
knowledge_base.add_contents(contents)

Agent Configuration (if applicable)

No response

Expected Behavior

It should support text_contents in kwargs or text_content in args in add_contents_async of Knowledge class

Actual Behavior

Screenshots or Logs (if applicable)

No response

Environment

- Agno version [v2.0.6]
- Python 3.10

Possible Solutions (optional)

async def add_contents_async(self, *args, **kwargs) -> None:
        if args and isinstance(args[0], list):
            arguments = args[0]
            upsert = kwargs.get("upsert", False)
            skip_if_exists = kwargs.get("skip_if_exists", False)
            for argument in arguments:
                await self.add_content_async(
                    name=argument.get("name"),
                    description=argument.get("description"),
                    path=argument.get("path"),
                    url=argument.get("url"),
                    metadata=argument.get("metadata"),
                    text_content=argument.get("text_content"),
                    topics=argument.get("topics"),
                    reader=argument.get("reader"),
                    include=argument.get("include"),
                    exclude=argument.get("exclude"),
                    upsert=argument.get("upsert", upsert),
                    skip_if_exists=argument.get("skip_if_exists", skip_if_exists),
                    remote_content=argument.get("remote_content", None),
                )

        elif kwargs:
            name = kwargs.get("name", [])
            metadata = kwargs.get("metadata", {})
            description = kwargs.get("description", [])
            topics = kwargs.get("topics", [])
            text_contents = kwargs.get("text_contents", [])
            paths = kwargs.get("paths", [])
            urls = kwargs.get("urls", [])
            include = kwargs.get("include")
            exclude = kwargs.get("exclude")
            upsert = kwargs.get("upsert", False)
            skip_if_exists = kwargs.get("skip_if_exists", False)
            remote_content = kwargs.get("remote_content", None)
            for path in paths:
                await self.add_content_async(
                    name=name,
                    description=description,
                    path=path,
                    metadata=metadata,
                    include=include,
                    exclude=exclude,
                    upsert=upsert,
                    skip_if_exists=skip_if_exists,
                )
            for url in urls:
                await self.add_content_async(
                    name=name,
                    description=description,
                    url=url,
                    metadata=metadata,
                    include=include,
                    exclude=exclude,
                    upsert=upsert,
                    skip_if_exists=skip_if_exists,
                )
            if text_contents:
                for text_content in text_contents:
                    await self.add_content_async(
                        name=name,
                        description=description,
                        text_content=text_content,
                        metadata=metadata,
                        include=include,
                        exclude=exclude,
                        upsert=upsert,
                        skip_if_exists=skip_if_exists,
                    )
            if topics:
                await self.add_content_async(
                    name=name,
                    description=description,
                    topics=topics,
                    metadata=metadata,
                    include=include,
                    exclude=exclude,
                    upsert=upsert,
                    skip_if_exists=skip_if_exists,
                )

            if remote_content:
                await self.add_content_async(
                    name=name,
                    metadata=metadata,
                    description=description,
                    remote_content=remote_content,
                    upsert=upsert,
                    skip_if_exists=skip_if_exists,
                )

        else:
            raise ValueError("Invalid usage of add_contents.")

Additional Context

No response

[chyhkae]

In the class Content, maybe can support the text_content as well.