Resolve internal variables in formatter arguments

[zandivx]

Currently, VS Code variables like ${workspaceFolder} are not expanded in the arguments provided to the selected formatter. As this functionality is already implemented in this project and applied at several places, it's no effort to apply it to the arguments for the formatter as well.

[krystophny]

Thanks @zandivx ! This enables the use of a .fprettify file in the workspace folder

    "fortran.formatting.fprettifyArgs": [
        "--config",
        "${workspaceFolder}/.fprettify"
    ],

@gnikit this is a small change that is very useful, if you find time we would be very grateful if you could review this.

[zandivx]

@gnikit Perhaps you find time to review this change, it would be really convenient to be able to use this feature. It's just the usage of existing functionality in another place, no big changes introduced.
Thanks in advance!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.30%. Comparing base (4deaf57) to head (a2f55e8).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1171      +/-   ##
==========================================
+ Coverage   81.28%   81.30%   +0.01%     
==========================================
  Files          12       12              
  Lines        2319     2321       +2     
  Branches      191      191              
==========================================
+ Hits         1885     1887       +2     
  Misses        429      429              
  Partials        5        5              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[gnikit]

Done @zandivx. Thanks for the contribution and the bug fix! I have issued a Nightly release to you can download the pre-release and have the fix available.

[zandivx]

Thank you very much!