chore: initialize repository with project scaffold, gitignore and readme

.gitignore

@@ -0,0 +1,28 @@
+# Build output
+[Bb]in/
+[Oo]bj/
+[Oo]ut/
+artifacts/
+
+# .NET
+*.user
+*.userosscache
+*.suo
+*.dbmdl
+project.lock.json
+project.fragment.lock.json
+
+# Rider / JetBrains
+.idea/
+*.sln.iml
+
+# Visual Studio
+.vs/
+
+# Local design docs — kept out of the repo by request
+docs/
+
+# OS noise
+Thumbs.db
+desktop.ini
+.DS_Store