feat: notion loader

[cachho]

Description

• notion loader
• notion chunker (copy of text)
• id parser
• docs
• error handling for import error

Missing:

• unit tests
• does definitely not work for public pages, I tested this and I guess the connection is not enabled
• documentation how to enable the connection in notion is not included

Notes:

• errors for no connection are really bad (this should ideally be improved by the dependency)

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Fixes #26

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

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• Unit Test
• Test Script (please provide)

import os

from embedchain import App
from embedchain.config import AppConfig

config = AppConfig(log_level="DEBUG")
app = App(config=config)
os.environ["NOTION_INTEGRATION_TOKEN"] = "secret"

id = "test-cfbc134ca6464fc980d0391613959196"
app.add("notion", "cfbc134ca6464fc980d0391613959196")
app.add("notion", "my-page-cfbc134ca6464fc980d0391613959196")
app.add("notion", "https://www.notion.so/my-page-cfbc134ca6464fc980d0391613959196")

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings

Maintainer Checklist

• closes #xxxx (Replace xxxx with the GitHub issue number)
• Made sure Checks passed

[taranjeet]

looks good. left one minor comment.

[taranjeet]

the signature will change once we merge #380