Improve preprocessor

[og-mrk]

Type of Change

• Bug fix
• Refactoring

Description (Highlighted Changes)

• Using Push-Location & Pop-Location instead of 'workingdir', which'll deduplicate a lot of un-needed pre-fixes when dealing with paths, it's a nice & simple approach to this problem.. can't remember which repo I found it 😅.. but hay, here it is.
• Improve overall Invoke-Preprocessing script, now it actually excludes files that it shouldn't be processing.
• Now the mis-behaving RegEx in Invoke-Preprocessing works as intended! (See Additional Information for more info about this "mis-behaving" RegEx)
  needed to rethink what it should be looking for.. and again, this RegEx approach is "good enough" for now, it's better in the long-run to parse & make AST for every powershell script file.

Testing

Ran the compiled winutil.ps1 file, as well as through Compile.ps1 -Run, both worked as expected.

Impact

this PR won't have that impact to end-user, nor will it (hopefully) impact other open PRs.. not sure on the later part.

Additional Information

• The previously outlined "mis-behaving" RegEx in PR Description is referring to last RegEx in the list, which'll remove the whitespace between type cast & variable name, like [string] $MyString -> [string]$MyString, see screenshot below for more context.

Click to Expand

Checklist

• My code adheres to the coding and style guidelines of the project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no errors/warnings/merge conflicts.

[og-mrk]

@ChrisTitusTech

[MyDrift-user]

Thanks @og-mrk for fixing this :)