Codeql workflow fixes for new slnx solution format

Author: michelebastione

.github/workflows/codeql-analysis.yml

@@ -57,8 +57,9 @@ jobs:
 
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
-    - name: Autobuild
-      uses: github/codeql-action/autobuild@v3
+    
+#    - name: Autobuild
+#      uses: github/codeql-action/autobuild@v3
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -67,9 +68,8 @@ jobs:
     #    and modify them (or add more) to build your code if your project
     #    uses a compiled language
 
-    #- run: |
-    #   make bootstrap
-    #   make release
+    - name: Manual build
+      run: dotnet build
 
     - name: Perform CodeQL Analysis
       uses: github/codeql-action/analyze@v3

.github/workflows/dotnet.yml

@@ -3,8 +3,7 @@ name: .NET
 on:
   pull_request:
   push:
-    branches:
-    - master
+    branches: [master, v1.x-maintenance]
 
 jobs:
   build:

MiniExcel.sln

@@ -0,0 +1,32 @@
+<Solution>
+  <Folder Name="/benchmarks/">
+    <Project Path="benchmarks\MiniExcel.Benchmarks\MiniExcel.Benchmarks.csproj" Type="Classic C#" />
+  </Folder>
+  <Folder Name="/Docs and setting/">
+    <File Path=".gitattributes" />
+    <File Path=".gitignore" />
+    <File Path="appveyor.yml" />
+    <File Path=".github\workflows\dotnet.yml" />
+    <File Path="LICENSE" />
+    <File Path="README-NuGet.md" />
+    <File Path="README.md" />
+    <File Path="README.zh-CN.md" />
+    <File Path="README.zh-Hant.md" />
+    <File Path=".github\workflows\benchmark.yml" />
+    <File Path=".github\workflows\codeql-analysis.yml" />
+    <File Path="docs\core_logic_diagram.drawio" />
+  </Folder>
+  <Folder Name="/Releases/">
+    <File Path="docs\README.md" />
+    <File Path="docs\README.zh-CN.md" />
+    <File Path="docs\README.zh-Hant.md" />
+  </Folder>
+  <Folder Name="/src/">
+    <Project Path="src\MiniExcel.Core\MiniExcel.Core.csproj" Type="Classic C#" />
+    <Project Path="src\MiniExcel.Csv\MiniExcel.Csv.csproj" Type="Classic C#" />
+    <Project Path="src\MiniExcel\MiniExcel.csproj" Type="Classic C#" />
+  </Folder>
+  <Folder Name="/tests/">
+    <Project Path="tests\MiniExcelTests\MiniExcelTests.csproj" Type="Classic C#" />
+  </Folder>
+</Solution>