Add pristine dotnet new webapi scaffold

Baseline commit of the untouched template so the M0 restructure lands as a
reviewable diff rather than appearing as the initial state.

Includes .gitignore and .gitattributes only; no source changes.

.idea/.idea.DodoSSH/.idea/.gitignore

@@ -0,0 +1,15 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Rider ignored files
+/projectSettingsUpdater.xml
+/modules.xml
+/.idea.DodoSSH.iml
+/contentModel.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Ignored default folder with query files
+/queries/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/.idea.DodoSSH/.idea/encodings.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding" addBOMForNewFiles="with BOM under Windows, with no BOM otherwise" />
+</project>

.idea/.idea.DodoSSH/.idea/indexLayout.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="UserContentModel">
+    <attachedFolders />
+    <explicitIncludes />
+    <explicitExcludes />
+  </component>
+</project>