Pulled out common properties for the projects into common project

BSIPA.sln

@@ -19,6 +19,8 @@ EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{4D6639A2-BD39-4F9B-AF7F-8E5F3B88243D}"
 	ProjectSection(SolutionItems) = preProject
 		.github\workflows\build.yml = .github\workflows\build.yml
+		Common.props = Common.props
+		Common.targets = Common.targets
 		.github\workflows\docs.yml = .github\workflows\docs.yml
 		README.md = README.md
 		.github\release_draft.yml = .github\release_draft.yml

Common.props

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project>
+
+</Project>

Common.targets

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project>
+
+  <PropertyGroup>
+    <!--<PathMap>$(SolutionDir)=C:\</PathMap>-->
+    <DebugType>portable</DebugType>
+    <LangVersion>9</LangVersion>
+    <NoWarn>CA1031</NoWarn>
+    <WarningsAsErrors>$(WarningsAsErrors);nullable</WarningsAsErrors>
+    <Nullable>disable</Nullable>
+  </PropertyGroup>
+
+</Project>

IPA.Injector/IPA.Injector.csproj

@@ -1,13 +1,12 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
+  
+  <Import Project="..\Common.props"/>
 
   <PropertyGroup>
     <TargetFrameworks>net461;net35</TargetFrameworks>
     <RootNamespace>IPA.Injector</RootNamespace>
-    <!--<PathMap>$(SolutionDir)=C:\</PathMap>-->
-    <DebugType>portable</DebugType>
-    <LangVersion>8.0</LangVersion>
+    
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <NoWarn>CA1031</NoWarn>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <BuildForBeatSaber Condition=" '$(BuildForBeatSaber)' == '' And '$(TargetFramework)' == 'net461' ">true</BuildForBeatSaber>
@@ -103,4 +102,6 @@
     <RemoveDir Directories="$(OutputPath)Libraries" />
   </Target>
 
+  <Import Project="..\Common.targets"/>
+
 </Project>

IPA.Loader/IPA.Loader.csproj

@@ -1,13 +1,12 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <Import Project="..\Common.props"/>
 
   <PropertyGroup>
     <TargetFrameworks>net461;net35</TargetFrameworks>
     <RootNamespace>IPA</RootNamespace>
-    <!--<PathMap>$(SolutionDir)=C:\</PathMap>-->
-    <DebugType>portable</DebugType>
-    <LangVersion>8.0</LangVersion>
+    
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <NoWarn>CA1031</NoWarn>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <BuildForBeatSaber Condition=" '$(BuildForBeatSaber)' == '' And '$(TargetFramework)' == 'net461' ">true</BuildForBeatSaber>
@@ -64,4 +63,6 @@
     <EmbeddedResource Include="Loader\description.md" />
   </ItemGroup>
 
+  <Import Project="..\Common.targets"/>
+
 </Project>

IPA/IPA.csproj

@@ -1,5 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
+  <Import Project="..\Common.props"/>
+
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFrameworks>net461;netcoreapp3.1</TargetFrameworks>
@@ -7,14 +9,13 @@
     <RootNamespace>IPA</RootNamespace>
     <AssemblyName>IPA</AssemblyName>
     <PathMap>$(SolutionDir)=C:\</PathMap>
-    <DebugType>portable</DebugType>
-    <LangVersion>8.0</LangVersion>
-    <NoWarn>CA1031</NoWarn>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <GenerateRuntimeConfigurationFiles>true</GenerateRuntimeConfigurationFiles>
 
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <ApplicationIcon>favicon.ico</ApplicationIcon>
   </PropertyGroup>
+
+  <Import Project="..\Common.targets"/>
   
 </Project>