Elixir interface

[tank-bohr]

Changes:

• Adds elixir struct interface for bookish_spork_request

Rationale:

For elixir users sake

{:ok, request} = :bookish_spork.capture_request
assert request.uri == '/jokes/random?category=dev'

[codecov]

Codecov Report

Merging #37 into master will increase coverage by 0.13%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #37      +/-   ##
==========================================
+ Coverage   96.26%   96.39%   +0.13%     
==========================================
  Files           5        5              
  Lines         107      111       +4     
==========================================
+ Hits          103      107       +4     
  Misses          4        4

Impacted Files	Coverage Δ
src/bookish_spork_request.erl	100% <100%> (ø)	⬆️

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