Merge pull request #4335 from Youssef1313/patch-8

Create PULL_REQUEST_TEMPLATE.md

.github/PULL_REQUEST_TEMPLATE.md

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+<!--
+
+Make sure to run `msbuild RoslynAnalyzers.sln /t:pack` and `msbuild FxCopAnalyzeres.sln /t:pack` in the repository root when
+you have any of the following changes that affect auto-generated files. Otherwise, the CI build will fail.
+
+- Adding a new diagnostic analyzer or a code fix
+- Adding or updating resource strings used by analyzers and code fixes
+- Updating analyzer package versions in [Versions.props](../eng/Versions.props)
+
+(Consider merging master into your branch before you run msbuild pack to reduce having merge conflicts)
+
+If you're adding a new rule, Make sure to read the guidlines in: https://github.com/dotnet/roslyn-analyzers/blob/master/GuidelinesForNewRules.md.
+Also, see https://docs.microsoft.com/contribute/dotnet/dotnet-contribute-code-analysis#contribute-docs-for-caxxxx-rules for documentation guidelines.
+
+
+-->