Add missing .gitignore file

Author: andriibratanin

.gitignore

@@ -0,0 +1,61 @@
+# Created by https://gitignore.org
+# Dotnet.gitignore
+
+## A streamlined .gitignore for modern .NET projects
+## including temporary files, build results, and
+## files generated by popular .NET tools. If you are
+## developing with Visual Studio, the VS .gitignore
+## https://github.com/github/gitignore/blob/main/VisualStudio.gitignore
+## has more thorough IDE-specific entries.
+##
+## Get latest from https://github.com/github/gitignore/blob/main/Dotnet.gitignore
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+[Ll]ogs/
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# NuGet Packages
+*.nupkg
+# NuGet Symbol Packages
+*.snupkg
+
+# Others
+~$*
+*~
+CodeCoverage/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUnit
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
+
+# Custom section
+.idea
+*.DotSettings.user