add weniwebchat urn

[rasoro]

this new urn is needed for that PR nyaruka/courier#372 in Courier

[norkans7]

@rasoro how is the weniwebchat validated?

can you add that as done on https://github.com/nyaruka/gocommon/pull/28/files ?

And tests as well

[rowanseymour]

Was chatting with @ericnewcomer about this yesterday and we think the way this would work is as follows:

• Users should be able to have an RP account that is connected to multiple Weni chat deployments on different websites.
• The weniwebchat URN thus needs to include an identifier for each external site
• The external site itself should provide the chat client with a unique identifier for the current user and current site.

So say I'm running weni web chat on my "Foo" site, the client code needs to be initialized with

• user identifier which could be UUID associated with the currently authenticated user, or the current HTTP session if there isn't an authenticated user.
• a identifier like foo for this site - just has to be unique across the sites I'm running Weni Web Chat on

When communicating with courier, the URN then should be something like weniwebchat:123456@foo, so that user 123456 on site foo can have multiple chats which map to the same contact in RP.

Could probably also let the scheme be generic like webchat:123456@foo.. even if we add different webchat channel types, they can still work from the same URN scheme.

[rasoro]

thank you very much for your tip, @norkans7 , it really helped me

[rasoro]

@rowanseymour, Thanks for the sugestion. We discussed it here on our side and we realized that it would really be a good approach if the urn could be used for any other webchat channel types.

[matmsa27]

URN updated on this commit on Rapidpro django

[codecov[bot]]

Codecov Report

Merging #51 (c89c69d) into main (94ddae9) will increase coverage by 0.04%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #51      +/-   ##
==========================================
+ Coverage   90.91%   90.96%   +0.04%     
==========================================
  Files          22       22              
  Lines         848      852       +4     
==========================================
+ Hits          771      775       +4     
  Misses         49       49              
  Partials       28       28              

Impacted Files	Coverage Δ
urns/urns.go	100.00% <100.00%> (ø)

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