Prepare for automated localization (#5119)

This pull request includes a localization config file that identifies
the modules we need to localize. It also moves us back to the
`Resources\LANGUAGE\Resources.resw` resource layout, but using wildcards
so that the build system can pick up any number of languages.

build/config/LocConfig.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Modules>
+  <Module name="Microsoft.WindowsTerminal" tdbuildteamid="7105">
+    <File location="TerminalApp"
+      path="%BUILD_SOURCESDIRECTORY%\src\cascadia\TerminalApp\Resources\en-US\Resources.resw" />
+    <File location="TerminalControl"
+      path="%BUILD_SOURCESDIRECTORY%\src\cascadia\TerminalControl\Resources\en-US\Resources.resw" />
+    <File location="TerminalConnection"
+      path="%BUILD_SOURCESDIRECTORY%\src\cascadia\TerminalConnection\Resources\en-US\Resources.resw" />
+    <File location="WindowsTerminalUniversal"
+      path="%BUILD_SOURCESDIRECTORY%\src\cascadia\WindowsTerminalUniversal\Resources\en-US\Resources.resw" />
+    <File location="CascadiaPackage"
+      path="%BUILD_SOURCESDIRECTORY%\src\cascadia\CascadiaPackage\Resources\en-US\Resources.resw" />
+  </Module>
+</Modules>

src/cascadia/CascadiaPackage/CascadiaPackage.wapproj

@@ -43,7 +43,7 @@
     <!-- Resources -->
     <!-- This resw only defines things that are used in this package's AppxManifest,
          so it's not in the common resource items. -->
-    <PRIResource Include="Resources\Resources.language-en.resw" />
+    <PRIResource Include="Resources\*\Resources.resw" />
     <PRIResource Include="Resources\Resources.resw" />
   </ItemGroup>
   <PropertyGroup Condition="'$(WindowsTerminalReleaseBuild)'!='true'">

src/cascadia/TerminalApp/lib/TerminalAppLib.vcxproj

@@ -216,7 +216,7 @@
   </ItemGroup>
   <!-- ========================= Misc Files ======================== -->
   <ItemGroup>
-    <PRIResource Include="../Resources/Resources.language-en.resw" />
+    <PRIResource Include="..\Resources\*\Resources.resw" />
     <None Include="../packages.config" />
   </ItemGroup>
   <!-- ========================= Project References ======================== -->

src/cascadia/TerminalConnection/TerminalConnection.vcxproj

@@ -59,7 +59,7 @@
     <Midl Include="TelnetConnection.idl" />
   </ItemGroup>
   <ItemGroup>
-    <PRIResource Include="Resources/Resources.language-en.resw" />
+    <PRIResource Include="Resources\*\Resources.resw" />
     <None Include="packages.config" />
   </ItemGroup>
   <!-- ========================= Project References ======================== -->

src/cascadia/TerminalControl/TerminalControl.vcxproj

@@ -85,7 +85,7 @@
     <None Include="TerminalControl.def" />
   </ItemGroup>
   <ItemGroup>
-    <PRIResource Include="Resources/Resources.language-en.resw" />
+    <PRIResource Include="Resources\*\Resources.resw" />
   </ItemGroup>
   <!-- ========================= Project References ======================== -->
   <ItemGroup>

src/cascadia/TerminalControl/TerminalControl.vcxproj.filters

@@ -45,7 +45,7 @@
     <Natvis Include="$(SolutionDir)tools\ConsoleTypes.natvis" />
   </ItemGroup>
   <ItemGroup>
-    <PRIResource Include="Resources/Resources.language-en.resw">
+    <PRIResource Include="Resources\*\Resources.resw">
       <Filter>Resources</Filter>
     </PRIResource>
   </ItemGroup>

src/cascadia/WindowsTerminalUniversal/WindowsTerminalUniversal.vcxproj

@@ -123,7 +123,7 @@
     <!-- Resources -->
     <!-- This resw only defines things that are used in this package's AppxManifest,
          so it's not in the common resource items. -->
-    <PRIResource Include="Resources\Resources.language-en.resw" />
+    <PRIResource Include="Resources\*\Resources.resw" />
     <PRIResource Include="Resources\Resources.resw" />
     <PRIResource Include="Resources\Resources.devicefamily-core.resw" />
   </ItemGroup>

src/cascadia/WindowsTerminalUniversal/WindowsTerminalUniversal.vcxproj.filters

@@ -18,15 +18,12 @@
     <Filter Include="Resources">
       <UniqueIdentifier>{4718a03b-f768-4d96-9106-096573a315a3}</UniqueIdentifier>
     </Filter>
-    <Filter Include="Resources\en-US">
-      <UniqueIdentifier>{943541d5-c1da-435d-9f61-85d1b118f041}</UniqueIdentifier>
-    </Filter>
   </ItemGroup>
   <ItemGroup>
     <PRIResource Include="Resources.devicefamily-core.resw">
       <Filter>Resources</Filter>
     </PRIResource>
-    <PRIResource Include="Resources.language-en.resw">
+    <PRIResource Include="Resources\*\Resources.resw">
       <Filter>Resources</Filter>
     </PRIResource>
     <PRIResource Include="Resources.resw">