csproj-package.xml

<Project Sdk="Microsoft.NET.Sdk">
  ...
  <ItemGroup>
    ...
    <!-- Reference the NuGet package -->
    <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.9.4">
      <PrivateAssets>all</PrivateAssets>
      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
    </PackageReference>
    ...
  </ItemGroup>
  ...
</Project>

csproj-ruleset.xml

<Project Sdk="Microsoft.NET.Sdk">
  ...
  <!-- Reference the rule set -->
  <PropertyGroup>
    <CodeAnalysisRuleSet>..\AllRulesDefault.ruleset</CodeAnalysisRuleSet>
  </PropertyGroup>
  ...
  <ItemGroup>
    ...
    <!-- Reference the NuGet package -->
    <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.9.4">
      <PrivateAssets>all</PrivateAssets>
      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
    </PackageReference>
    ...
  </ItemGroup>
  ...
</Project>

default-ruleset.xml

<?xml version="1.0"?>
<RuleSet Name="All Rules with default action"
         Description="All Rules with default action. Rules with IsEnabledByDefault = false are disabled."
         ToolsVersion="15.0">
   ...
   <Rules AnalyzerId="Microsoft.CodeQuality.Analyzers"
          RuleNamespace="Microsoft.CodeQuality.Analyzers">
      <Rule Id="CA1000" Action="Warning" />          <!-- Do not declare static members on generic types -->
      <Rule Id="CA1008" Action="None" />             <!-- Enums should have zero value -->
      ...
   </Rules>
   ...
</RuleSet>

dotnet-add-package.sh

dotnet add package Microsoft.CodeAnalysis.FxCopAnalyzers

editorconfig.txt

# Version: 1.3.1 (Using https://semver.org/)
# Updated: 2019-08-04
# See https://github.com/RehanSaeed/EditorConfig/releases for release notes.
# See https://github.com/RehanSaeed/EditorConfig for updates to this file.
# See http://EditorConfig.org for more information about .editorconfig files.

...

##########################################
# .NET Language Conventions
# https://docs.microsoft.com/visualstudio/ide/editorconfig-language-conventions
##########################################

# .NET Code Style Settings
# https://docs.microsoft.com/visualstudio/ide/editorconfig-language-conventions#net-code-style-settings
[*.{cs,csx,cake,vb}]
# "this." and "Me." qualifiers
# https://docs.microsoft.com/visualstudio/ide/editorconfig-language-conventions#this-and-me
dotnet_style_qualification_for_field = true:warning
dotnet_style_qualification_for_property = true:warning
dotnet_style_qualification_for_method = true:warning
dotnet_style_qualification_for_event = true:warning
...