Add LocalisationAnalyser package and tools

.config/dotnet-tools.json

@@ -31,6 +31,12 @@
       "commands": [
         "CodeFileSanity"
       ]
+    },
+    "ppy.localisationanalyser.tools": {
+      "version": "2021.521.1",
+      "commands": [
+        "localisation"
+      ]
     }
   }
-}
+}

osu.Game/osu.Game.csproj

@@ -29,6 +29,10 @@
     <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="5.0.0" />
     <PackageReference Include="Microsoft.NETCore.Targets" Version="3.1.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
+    <PackageReference Include="ppy.LocalisationAnalyser" Version="2021.521.1">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
     <PackageReference Include="ppy.osu.Framework" Version="2021.513.0" />
     <PackageReference Include="ppy.osu.Game.Resources" Version="2021.422.0" />
     <PackageReference Include="Sentry" Version="3.3.4" />