[Feature Request]: Filtering support for my_recent_swaps

[Milerius]

Is your feature request related to a problem? Please describe.

Since #780 and #781 we page pagination support ! 🎊

However it includes other problems, like filtering, indeed filtering only applies on the result of the pagination that based on the initial request my_recent_swaps.

The problem is that if we have for example 220 swaps, with a limit of 50swaps per pages, we have 5 pages (without filtering) but if we do filtering the total number of swaps changes and the number of pages also changes. (not supported my mm2 yet)

This need to be handled in mm2 side.

Describe the solution you'd like

I wish the rpc call my_recent_swaps could take an optional new filtering parameter.

//! 1st example (Returns 50 first swaps for page 1 that are between `1609223333` and `1609225294`)
{
  "userpass": "rpc_password",
  "method": "my_recent_swaps",
  "page_number": 1,
  "limit": 50,
  "filtering": {"date_range": [1609223333, 1609225294]}
}

//! 2nd example  (Returns 50 first swaps for page 1 that have base_coin `RICK` and that are between `1609223333` and `1609225294`)
{
  "userpass": "rpc_password",
  "method": "my_recent_swaps",
  "page_number": 1,
  "limit": 50,
  "filtering": {"date_range": [1609223333, 1609225294], "pattern": "RICK/*" }
}

//! 3rd example (Returns 50 first swaps for page 1 that have base_coin `RICK`)
{
  "userpass": "rpc_password",
  "method": "my_recent_swaps",
  "page_number": 1,
  "limit": 50,
  "filtering": {"pattern": "RICK/*" }
}

Note that total_pages in the answer should also change based on the filtering.

Describe alternatives you've considered

Fetch all the swaps once, and then apply filtering myself, but with huge swaps history this cost too much memory and this is slow

Additional context

Maybe related to the fact that MM2 plan to move DB to smth like: embedded DB like SQLite, will be easier to use filtering in this case

Also related to KomodoPlatform/komodo-wallet#621

Video: https://user-images.githubusercontent.com/21139416/103265567-32c76e80-49ae-11eb-94ce-8b39dfe27385.mov

[artemii235]

I have implemented the filtering: the params are passed a bit differently than requested, but I think it looks a bit more straight-forward this way. The corresponding PR has been just merged, the docs update PR will be merged soon and published on the website.

[artemii235]

The Github release has been just published: https://github.com/KomodoPlatform/atomicDEX-API/releases/tag/beta-2.1.2978. All OS builds will be uploaded from CI quite soon.