Add HTTPRequest.Target

[swhitty]

Adds HTTPRequest.target to preserve the raw path and query string from the request as per RFC9112 allowing access to either percent encoded or the original raw path / query string.

resolves #175

A request like so;

GET /hello%20world?fish=%2Fchips HTTP/1.1

Produces the following HTTPRequest:

request.path == "/hello world"
request.target.path() == "/hello%20world"
request.target.path(percentEncoded: false) == "/hello world"

request.query == [QueryItem(name: "fish", value="/chips"]
request.target.query() == "fish=%2Fchips"
request.target.query(percentEncoded: false) == "fish=/chips"

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.03%. Comparing base (29fffbd) to head (fb8a62b).
⚠️ Report is 2 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #179      +/-   ##
==========================================
+ Coverage   92.67%   93.03%   +0.36%     
==========================================
  Files          68       69       +1     
  Lines        3412     3445      +33     
==========================================
+ Hits         3162     3205      +43     
+ Misses        250      240      -10     

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