Initial tutorial project

.gitignore

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+# Build results
+[Bb]in/
+[Oo]bj/
+build/
+artifacts/
+
+# Visual Studio / Rider / VS Code
+.vs/
+.idea/
+.vscode/
+*.user
+*.suo
+*.rsuser
+*.userosscache
+*.sln.docstates
+
+# .NET generated files
+project.assets.json
+project.nuget.cache
+*.nuget.g.props
+*.nuget.g.targets
+*.AssemblyInfo.cs
+*.GeneratedMSBuildEditorConfig.editorconfig
+*.GlobalUsings.g.cs
+*.FileListAbsolute.txt
+*.CoreCompileInputs.cache
+*.AssemblyReference.cache
+*.assets.cache
+
+# Test and coverage output
+TestResults/
+coverage/
+*.coverage
+*.coveragexml
+coverage*.json
+
+# Logs, diagnostics, and temporary files
+*.log
+*.tlog
+*.binlog
+*.pdb
+*.cache
+*.tmp
+*.temp
+*.swp
+*.bak
+
+# Local runtime configuration
+cartparams.json
+appsettings.Development.json
+*.local.json
+
+# OS files
+Thumbs.db
+.DS_Store