[Task]: Support search with threshold on created/updated in the API

[diox]

Description

• Support threshold value query on created date.
• Support threshold value query on updated date.

Since it's possible to combine gt(e)/lt(e) threshold parameters, this should make searching for add-ons created or updated in specific time period.

The trick will be to find a nice way to represent dates/timestamps as values for the parameters. Probably use ISO 8601 format (YYYY-MM-DD or YYYY-MM-DDTHH:MM:SS) and/or JavaScript-style timestamps (milliseconds from Jan 1 1970).

Acceptance Criteria

• Add-on search API allows threshold values for created
• Add-on search API allows threshold values for updated

┆Issue is synchronized with this Jira Task

[ioanarusiczki]

Search requests I’ve tried with created

https://addons-dev.allizom.org/api/v5/addons/search/?q=put-create&type=extension&created__gte=2025-01-01
https://addons-dev.allizom.org/api/v5/addons/search/?q=put-create&type=extension&created__lte=2025-01-01
https://addons-dev.allizom.org/api/v5/addons/search/?promoted=recommended&sort=random&type=extension&app=firefox&created__gte=2025-05-27T11:20:29Z
https://addons-dev.allizom.org/api/v5/addons/search/?promoted=recommended&sort=random&type=extension&app=firefox&created__gte=1748350029000

Search requests with updated
https://addons-dev.allizom.org/api/v5/addons/search/?type=extension&updated__gte=2025-01-01
https://addons-dev.allizom.org/api/v5/addons/search/?type=theme&updated__lte=2025-09-05

Note, I’ve the same nr of addons on https://addons-dev.allizom.org/api/v5/addons/search/?q=put-create&type=extension&updated__gte=2025-01-01 with https://addons-dev.allizom.org/api/v5/addons/search/?q=put-create&type=extension&created__gte=2025-01-01

Or
https://addons-dev.allizom.org/api/v5/addons/search/?q=put-create&type=extension&updated__lte=2025-01-01 with
https://addons-dev.allizom.org/api/v5/addons/search/?q=put-create&type=extension&created__lte=2025-01-01