Move source in windows uploads into its own internal zip

This should prevent path length issues when extracting the build from the installer

.ci/scripts/windows/upload.ps1

@@ -1,11 +1,12 @@
 param($BUILD_NAME)
 
-$GITDATE = $(git show -s --date=short --format='%ad') -replace "-",""
+$GITDATE = $(git show -s --date=short --format='%ad') -replace "-", ""
 $GITREV = $(git show -s --format='%h')
 
 if ("$BUILD_NAME" -eq "mainline") {
     $RELEASE_DIST = "yuzu-windows-msvc"
-} else {
+}
+else {
     $RELEASE_DIST = "yuzu-windows-msvc-$BUILD_NAME"
 }
 
@@ -14,7 +15,9 @@ $MSVC_BUILD_PDB = "yuzu-windows-msvc-$GITDATE-$GITREV-debugsymbols.zip" -replace
 $MSVC_SEVENZIP = "yuzu-windows-msvc-$GITDATE-$GITREV.7z" -replace " ", ""
 $MSVC_TAR = "yuzu-windows-msvc-$GITDATE-$GITREV.tar" -replace " ", ""
 $MSVC_TARXZ = "yuzu-windows-msvc-$GITDATE-$GITREV.tar.xz" -replace " ", ""
-$MSVC_SOURCE = "yuzu-windows-msvc-source-$GITDATE-$GITREV.tar.xz" -replace " ", ""
+$MSVC_SOURCE = "yuzu-windows-msvc-source-$GITDATE-$GITREV" -replace " ", ""
+$MSVC_SOURCE_TAR = "$MSVC_SOURCE.tar"
+$MSVC_SOURCE_TARXZ = "$MSVC_SOURCE_TAR.xz"
 
 $env:BUILD_ZIP = $MSVC_BUILD_ZIP
 $env:BUILD_SYMBOLS = $MSVC_BUILD_PDB
@@ -22,21 +25,33 @@ $env:BUILD_UPDATE = $MSVC_SEVENZIP
 
 $BUILD_DIR = ".\build\bin\Release"
 
+# Upload debugging symbols
 mkdir pdb
 Get-ChildItem "$BUILD_DIR\" -Recurse -Filter "*.pdb" | Copy-Item -destination .\pdb
 7z a -tzip $MSVC_BUILD_PDB .\pdb\*.pdb
 rm "$BUILD_DIR\*.pdb"
+
+# Create artifact directories
 mkdir $RELEASE_DIST
+mkdir $MSVC_SOURCE
 mkdir "artifacts"
 
+# Build a tar.xz for the source of the release
+Copy-Item .\license.txt -Destination $MSVC_SOURCE
+Copy-Item .\README.md -Destination $MSVC_SOURCE
+Copy-Item .\src -Recurse -Destination $MSVC_SOURCE
+Copy-Item .\externals -Recurse -Destination $MSVC_SOURCE
+Copy-Item .\dist -Recurse -Destination $MSVC_SOURCE
+Copy-Item .\CMakeModules -Recurse -Destination $MSVC_SOURCE
+7z a -r -ttar $MSVC_SOURCE_TAR $MSVC_SOURCE
+7z a -r -txz $MSVC_SOURCE_TARXZ $MSVC_SOURCE_TAR
+
+# Build the final release artifacts
+Copy-Item $MSVC_SOURCE_TARXZ -Destination $RELEASE_DIST
 Copy-Item "$BUILD_DIR\*" -Destination $RELEASE_DIST -Recurse
 rm "$RELEASE_DIST\*.exe"
 Get-ChildItem "$BUILD_DIR" -Recurse -Filter "yuzu*.exe" | Copy-Item -destination $RELEASE_DIST
 Get-ChildItem "$BUILD_DIR" -Recurse -Filter "QtWebEngineProcess*.exe" | Copy-Item -destination $RELEASE_DIST
-Copy-Item .\license.txt -Destination $RELEASE_DIST
-Copy-Item .\README.md -Destination $RELEASE_DIST
-Copy-Item .\src -Recurse -Destination $RELEASE_DIST
-Copy-Item .\externals -Recurse -Destination $RELEASE_DIST
 7z a -tzip $MSVC_BUILD_ZIP $RELEASE_DIST\*
 7z a $MSVC_SEVENZIP $RELEASE_DIST