msvc: Update genhdr script to emit MicroPython version numbers

windows/msvc/genhdr.targets

@@ -55,11 +55,23 @@
       <DestFile>$(DestDir)py-version.h</DestFile>
       <TmpFile>$(DestFile).tmp</TmpFile>
     </PropertyGroup>
+    <PropertyGroup>
+      <Ver>$([System.Text.RegularExpressions.Regex]::Match($(GitTag), `^v[0-9\.]{5}`))</Ver>
+      <Ver Condition="'$(Ver)'==''">v0.0.1</Ver>
+      <Ver>$(Ver.Remove(0, 1))</Ver>
+      <VerMajor>$(Ver.Split(`.`)[0])</VerMajor>
+      <VerMinor>$(Ver.Split(`.`)[1])</VerMinor>
+      <VerMicro>$(Ver.Split(`.`)[2])</VerMicro>
+    </PropertyGroup>
     <ItemGroup>
       <Lines Include="// This file was generated by $([System.IO.Path]::GetFileName(`$(MsBuildThisFile)`))"/>
       <Lines Include="#define MICROPY_GIT_TAG &quot;$(GitTag)&quot;"/>
       <Lines Include="#define MICROPY_GIT_HASH &quot;$(GitHash)&quot;"/>
       <Lines Include="#define MICROPY_BUILD_DATE &quot;$([System.DateTime]::Now.ToString(`yyyy-MM-dd`))&quot;"/>
+      <Lines Include="#define MICROPY_VERSION_MAJOR ($(VerMajor))"/>
+      <Lines Include="#define MICROPY_VERSION_MINOR ($(VerMinor))"/>
+      <Lines Include="#define MICROPY_VERSION_MICRO ($(VerMicro))"/>
+      <Lines Include="#define MICROPY_VERSION_STRING &quot;$(Ver)&quot;"/>
     </ItemGroup>
     <WriteLinesToFile Lines="@(Lines)" File="$(TmpFile)" Overwrite="true"/>
     <MSBuild Projects="$(MSBuildThisFileFullPath)" Targets="CopyFileIfDifferent" Properties="SourceFile=$(TmpFile);DestFile=$(DestFile)"/>