Add Monzo integration

[JakeMartin-ICL]

Proposed change

This adds a new integration for Monzo, the UK bank. It provides balance and total balance sensors for each account and balance sensors for each pot. It also registers a webhook for transaction creation events which can be used as a device trigger, plus a simple service to transfer money between your own accounts and pots.

If you'd like to check out the integration on HACS, it can be found at: https://github.com/JakeMartin-ICL/ha-monzo/tree/main
The repo with the API wrapper is: https://github.com/JakeMartin-ICL/monzopy

Screenshots

Each account is shown in HA as a device

Each device has a balance sensor, plus a total balance if the account has pots

An example of an automation I use to keep my current account at a target I set, moving any excess to savings or pulling back into my current account if needed

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request: Added docs for Monzo integration home-assistant.io#29279
• Related feature request: https://community.home-assistant.io/t/monzo-bank/26406

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• I have followed the perfect PR recommendations
• The code has been formatted using Black (black --fast homeassistant tests)
• Tests have been added to verify that the new code works.*

*not 100% coverage

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.
• Untested files have been added to .coveragerc.

To help with the load of incoming pull requests:

• I have reviewed two other open pull requests in this repository.

[home-assistant]

Hi @JakeMartin-ICL

It seems you haven't yet signed a CLA. Please do so here.

Once you do that we will be able to review and accept this pull request.

Thanks!

[home-assistant]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks 👍

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[github-actions]

There hasn't been any activity on this pull request recently. This pull request has been automatically marked as stale because of that and will be closed if no further activity occurs within 7 days.
If you are the author of this PR, please leave a comment if you want to keep it open. Also, please rebase your PR onto the latest dev branch to ensure that it's up to date with the latest changes.
Thank you for your contribution!

[JakeMartin-ICL]

Thanks for the reviews and apologies for the delay making changes, moving house has kept me busy since new year.
Commenting to keep the PR open as I should be able to return to this in a week or two

[home-assistant]

There is a merge conflict.

[emontnemery]

LGTM, thanks @JakeMartin-ICL 👍

Stale