new: Add account_availability_info module

[yec-akamai]

📝 Description

Add the account_availability_info module for user to get information about resource availability in a region to their account.

✔️ How to Test

To run the test, you'll need to install python sdk from proj/dc-get-well branch, and test it in Alpha.

make TEST_ARGS="-v account_availability_info" test

Manual test:

1. Inside of a collection sandbox environment (e.g. dx-devenv), run the following playbook:

- name: ansible_linode Sandbox Playbook
  hosts: localhost
  tasks:
    - name: Get account availability information
      linode.cloud.account_availability_info:
        region: us-east
      register: account_availability

    - name: Output info about the accout availability
      debug:
        msg: |
          Account Availability Info:
            Region: {{ account_availability.account_availability.region }}
            Unavailable: {{ account_availability.account_availability.unavailable }}

[ykim-akamai]

Looks good. Couldn't pass the tests locally due to error was: ImportError: cannot import name 'AccountAvailability . Can you add test result as comment once Python SDK has the changes?

[zliang-akamai]

Can you run make gendocs and upload the generated docs?

[zliang-akamai]

lgtm, and tests passed. Well done!