Enable additional vendors and allow filtering

[kasbah]

As mentioned in hildogjr/KiCost#346. We should be able to support all vendors that octopart indexes (and then some, when we get to it).

[hildogjr]

Sure, this will remove some unnecessary bottle neck due requested and not used data.

[kasbah]

This is implemented as of ba43354. Filtering is done using a from argument with offers. E.g:

{
  search(term: "resistor 1k 0603") {
    offers(from: ["Digikey", "Mouser"]) {
      sku {
        vendor
        part
      }
      prices {
        USD
      }
    }
  }
}

[hildogjr]

Nice, I am making here to include this into the KiCost attempt. Will this also work with math API, correct?

[kasbah]

What's the math API? Just to be clearer here is an example with previously disabled vendors. Everything except 'Digikey' and 'RS' uses the same names as the Octopart API.

{
  search(term: "resistor 1k 0603") {
    offers(from: ["TME", "LCSC"]) {
      sku {
        vendor
      }
      prices {
        USD
      }
    }
  }
}

[hildogjr]

How you can get from LCSC PCB? I planned to include this in KiCost.
What is your full distributor supported list? (Basically all Octopart?)

[kasbah]

Yep, all of Octopart now which includes some info from LCSC. I haven't done anything special yet. Just passing the info on for now.

[hildogjr]

Is the https://dev-partinfo.kitspace.org/ offline? I was trying to test and integrate the new feature into KiCost.

[kasbah]

Oops, I messed up the server/domain transfer. Should be up again soon.

[hildogjr]

Returned
I think now your Digikey and RS are given me no offers.

[kasbah]

Thanks for reporting, fixed it with 9d14cf8.