Create public feed endpoints

[perryr16]

Any background context you want to provide?

Chula Vista has requested a public feed endpoint

What's this PR do?

Exposes a new public feed endpoint for JSON and HTML.

    Returns all property and taxlot state data for a given organization as a json object. The results are ordered by "state.update".

    Optional and configurable url query_params:
    :query_param labels: comma separated list of case sensitive label names. Results will include inventory that has any of the listed labels. Default is all inventory
    :query_param cycles: comma separated list of cycle ids. Results include inventory from the listed cycles. Default is all cycles
    :query_param properties: boolean to return properties. Default is True
    :query_param taxlots: boolan to return taxlots. Default is True
    :query_param page: integer page number
    :query_param per_page: integer results per page

    Example requests:
    {seed_url}/api/v3/public/organizations/feed.json?{query_param1}={value1}&{query_param2}={value2}
    dev1.seed-platform.org/api/v3/public/organizations/1/feed.json
    dev1.seed-platform.org/api/v3/public/organizations/1/feed.json?page=2&labels=Compliant&cycles=1,2,3&taxlots=False 

How should this be manually tested?

Go to {seed_url}/api/v3/public/organizations/{org_id}/feed.json?{query_param1}={value1}&{query_param2}={value2}.
Go to {seed_url}/api/v3/public/organizations/{org_id}/feed.html?{query_param1}={value1}&{query_param2}={value2}.
The page will be populated depending on the value of the organization setting public_feed_enabled

What are the relevant tickets?

#4513

Screenshots (if appropriate)

[axelstudios]

Since this PR fixes the previously incorrect migration order, any existing instances will have to manually fix the problem before running migrations:

UPDATE django_migrations
SET name = '0216_alter_sensor_unique_together'
WHERE name = '0215_alter_sensor_unique_together';