Fix parameters' casing in openAPI document are not honoured in Refit interface methods

[christianhelle]

The changes here fixes a case sensitivity issue regarding handling query string parameters.

This resolves #124

The follow OpenAPI spec:

openapi: '3.0.0'
paths:
  /job/{Id}:
    post:
      tags:
      - 'Jobs'
      operationId: 'Update job details'
      description: 'Update the details of the specified job.'
      parameters:
        - in: 'path'
          name: 'Id'
          description: 'Foo Id'
          required: true
          schema:
            type: 'string'
        - in: 'query'
          name: 'Title'
          description: 'Job title'
          required: true
          schema:
            type: 'string'
        - in: 'query'
          name: 'Description'
          description: 'Job description'
          required: true
          schema:
            type: 'string'
      responses:
        '200':
          description: 'successful operation'

Generates the following:

[Post("/job/{Id}")]
Task UpdateJobDetails(
    [AliasAs("Id")] string id, 
    [Query, AliasAs("Title")] string title, 
    [Query, AliasAs("Description")] string description);

And

openapi: '3.0.0'
paths:
  /job/{id}:
    post:
      tags:
      - 'Jobs'
      operationId: 'Update job details'
      description: 'Update the details of the specified job.'
      parameters:
        - in: 'path'
          name: 'id'
          description: 'Foo Id'
          required: true
          schema:
            type: 'string'
        - in: 'query'
          name: 'title'
          description: 'Job title'
          required: true
          schema:
            type: 'string'
        - in: 'query'
          name: 'description'
          description: 'Job description'
          required: true
          schema:
            type: 'string'
      responses:
        '200':
          description: 'successful operation'

Generates the following:

[Post("/job/{id}")]
Task UpdateJobDetails(string id, [Query] string title, [Query] string description);

[codecov]

Codecov Report

Merging #125 (1ab4e51) into main (f5db96f) will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #125      +/-   ##
==========================================
+ Coverage   98.25%   98.29%   +0.04%     
==========================================
  Files          31       32       +1     
  Lines         972      997      +25     
==========================================
+ Hits          955      980      +25     
  Misses          6        6              
  Partials       11       11              

Flag	Coverage Δ
unittests	98.29% <100.00%> (+0.04%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
src/Refitter.Core/ParameterExtractor.cs	97.82% <100.00%> (ø)
...ter.Tests/Examples/CaseSensitiveParametersTests.cs	100.00% <100.00%> (ø)

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

100.0% Coverage
0.0% Duplication