Improve export feature

[juliobguedes]

What is the purpose of this pull request?

To improve the export feature, allowing accounts with a huge number of redirects to work (e.g. Americanas)

What problem is this solving?

Currently, Americanas has over 7M registered redirects. However, this plugin stored the redirects in memory, to only save them to a file in the end, causing OOM issues that can kill the OS. This PR changes the process to enqueue the paginated requests and write them to a file concurrently to requesting next pages, which allows a better memory management and avoids OOM issues.

Types of changes

• Refactor (non-breaking change that only makes the code better)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Requires change to documentation, which has been updated accordingly.

Chores checklist

• Update CHANGELOG.md

[silvadenisaraujo]

Working with async writes works well and in my perspective solves the memory issue that we have today for large exports, I added comments if you want to go beyond and we could add a mechanism to handle retries and throttling efficiently.

[filafb]

LGTM. Just a comment about handling error in a more clear way, but not a blocker.

[filafb]

LGTM. Just a comment about error handling, but not a blocker at all.