feat: setup rfs client

[Blankll]

feat|fix|refactor: summary title of the PR

Introduce a request id and a reference to latest request. Dismiss
incoming responses other than from latest request.

Remove timeouts which were used to mitigate the racing issue but are
obsolete now.

Refs: #19

[codecov]

Codecov Report

Attention: Patch coverage is 61.29032% with 12 lines in your changes missing coverage. Please review.

Project coverage is 86.68%. Comparing base (d4cf33e) to head (b8f16bf).

Files with missing lines	Patch %	Lines
src/common/rfsClient.ts	62.50%	9 Missing ⚠️
src/stack/deploy.ts	40.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #21      +/-   ##
==========================================
- Coverage   88.67%   86.68%   -2.00%     
==========================================
  Files          40       41       +1     
  Lines         415      443      +28     
  Branches       55       60       +5     
==========================================
+ Hits          368      384      +16     
- Misses         31       42      +11     
- Partials       16       17       +1     

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