Migrate to .slnx.

Author: chemodax

.github/workflows/msbuild.yml

@@ -8,7 +8,7 @@ on:
 
 env:
   # Path to the solution file relative to the root of the project.
-  SOLUTION_FILE_PATH: EditorConfigGuidelines.sln
+  SOLUTION_FILE_PATH: EditorConfigGuidelines.slnx
 
   # Configuration type to build.
   # You can convert this to a build matrix if you need coverage of multiple configuration types.

EditorConfigGuidelines.sln

@@ -0,0 +1,19 @@
+<Solution>
+  <Folder Name="/Solution Items/">
+    <File Path=".editorconfig" />
+    <File Path="README.md" />
+  </Folder>
+  <Folder Name="/Solution Items/.github/" />
+  <Folder Name="/Solution Items/.github/workflows/">
+    <File Path=".github/workflows/msbuild.yml" />
+  </Folder>
+  <Folder Name="/Solution Items/art/">
+    <File Path="art/icon.svg" />
+    <File Path="art/options-1.png" />
+    <File Path="art/preview-1.png" />
+    <File Path="art/preview-2.png" />
+  </Folder>
+  <Project Path="EditorConfigGuidelines/EditorConfigGuidelines.csproj">
+    <Deploy Solution="Debug|*" />
+  </Project>
+</Solution>