build: add error_details definitions

[ofrobots]

DO NOT LAND YET

Add js & type definitions generated from error_details.proto.

Fixes: #77

[aalexand]

This doesn't fix #77 alone, right? I expect we should also start using the type defs. Or am I commenting against unfinished work? Apologies if so.

[ofrobots]

Well, since #75 hasn't landed yet, we could either consider this to 'fix' #77, and adjust #75, or wait for #75 to land and address the issue here.

I would be okay with either.

[codecov]

Codecov Report

Merging #87 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #87   +/-   ##
=======================================
  Coverage   96.83%   96.83%           
=======================================
  Files           6        6           
  Lines         348      348           
  Branches       56       56           
=======================================
  Hits          337      337           
  Misses         11       11

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[aalexand]

Ah, OK. I'm fine with either too.

[aalexand]

@nolanmar511 As discussed, take these changes and make the definitions actually used, as a separate PR. This one will be closed then.

[ofrobots]

I would like to close this PR at this point. It would be fairly easy to get back the definitions, and the issue #77 remains open to track the work needed.

If this is a mistake, go ahead and reopen.