More refactoring, getting rid of meson in favor of just powershell scripts

scripts/helpers/devshell.ps1

@@ -0,0 +1,31 @@
+param (
+    [ValidateSet("x64", "x86", "arm", "arm64")]
+    [string]$arch = "x64"
+)
+
+$ErrorActionPreference = "Stop"
+
+# Use vswhere to find the latest Visual Studio installation
+$vswhere_out = & "C:\Program Files (x86)\Microsoft Visual Studio\Installer\vswhere.exe" -latest -property installationPath
+if ($null -eq $vswhere_out) {
+    Write-Host "ERROR: Visual Studio installation not found"
+    exit 1
+}
+
+# Find Launch-VsDevShell.ps1 in the Visual Studio installation
+$vs_path     = $vswhere_out
+$vs_devshell = Join-Path $vs_path "\Common7\Tools\Launch-VsDevShell.ps1"
+
+if ( -not (Test-Path $vs_devshell) ) {
+    Write-Host "ERROR: Launch-VsDevShell.ps1 not found in Visual Studio installation"
+    Write-Host Tested path: $vs_devshell
+    exit 1
+}
+
+# Set the target architecture based on the parameter
+$env:VSCMD_ARG_TGT_ARCH=$arch
+
+# Launch the Visual Studio Developer Shell
+Push-Location
+& $vs_devshell @args
+Pop-Location

scripts/helpers/target_arch.psm1

@@ -0,0 +1,25 @@
+# target_arch.psm1
+
+function Get-TargetArchClang {
+    # Get the target architecture by querying clang itself
+    $output = & clang -v 2>&1
+    foreach ($line in $output) {
+        if ($line -like "*Target:*") {
+            $clangTarget = ($line -split ':')[1].Trim()
+            return $clangTarget
+        }
+    }
+    throw "Clang target architecture could not be determined."
+}
+
+function Get-TargetArchMSVC {
+    # Assuming you've set the Visual Studio environment variables using `vcvarsall.bat`
+    # This looks for the `VSCMD_ARG_TGT_ARCH` environment variable which Visual Studio sets to indicate the target architecture.
+    $arch = $env:VSCMD_ARG_TGT_ARCH
+    if (-not $arch) {
+        throw "MSVC target architecture could not be determined. Ensure you've initialized the Visual Studio environment."
+    }
+    return $arch
+}
+
+Export-ModuleMember -Function Get-TargetArchClang, Get-TargetArchMSVC