Improve and Fix Header Parsing

[wolveix]

#944 was merged as a successor to the original intention of this PR.

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This PR enables recursion for findInType for findHeaders and findParams. I'm still exploring the implications of doing this, though my initial findings don't turn up anything negative. The main purpose of this is to allow named fields in input and output structs, which have been requested features for quite some time.

This PR:

• Fixes Nested header on input #301 by permitting headers being explicitly set from a struct
• Fixes Unable to create a wrapper func that also requires the *http.Request object #811 and Enabling recursive process structs for patameters #870

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.62%. Comparing base (88c6cda) to head (2d5d9b3).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #943   +/-   ##
=======================================
  Coverage   92.62%   92.62%           
=======================================
  Files          23       23           
  Lines        4499     4504    +5     
=======================================
+ Hits         4167     4172    +5     
  Misses        274      274           
  Partials       58       58           

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