Allow for custom relative output path in .refitter

[Noblix]

This change allows for a relative output path to be specified in the .refitter config files similar to the --output option available in the CLI tool.

Example:

{
  "openApiPath": "../Resources/V3/SwaggerPetstore.json",
  "namespace": "Refitter.Tests.CustomGenerated",
  "output": "../CustomGenerated"
}

[christianhelle]

@Noblix thanks for this contribution

Can I ask you to update the README files with brief descriptions of the newly introduced output setting?

[christianhelle]

@all-contributors please add @Noblix for code

[allcontributors]

@christianhelle

I've put up a pull request to add @Noblix! 🎉

[codecov]

Codecov Report

Merging #172 (80054be) into main (c54dc5b) will not change coverage.
Report is 5 commits behind head on main.
The diff coverage is n/a.

❗ Current head 80054be differs from pull request most recent head 65e742f. Consider uploading reports for the commit 65e742f to get more accurate results

@@           Coverage Diff           @@
##             main     #172   +/-   ##
=======================================
  Coverage   98.37%   98.37%           
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  Files          41       41           
  Lines        1353     1353           
=======================================
  Hits         1331     1331           
  Misses          6        6           
  Partials       16       16           

Flag	Coverage Δ
unittests	98.37% <ø> (ø)

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[christianhelle]

@Noblix actually, let's just get this in and I'll fix the minor details myself

[christianhelle]

This contribution is now released in v0.8.1