utils: update build-windows-toolchain.bat

Add the header and library search paths for SQLite3 to the cmake
invocation for SwiftPM.  This is needed to allow building SwiftPM once
the SQLite3 wrapper is migrated from swift-tools-support-core to
SwiftPM.

Author: compnerd

utils/build-windows-toolchain.bat

@@ -575,6 +575,8 @@ cmake ^
   -D SwiftDriver_DIR=%BuildRoot%\11\cmake\modules ^
   -D SwiftCrypto_DIR=%BuildRoot%\12\cmake\modules ^
   -D SwiftCollections_DIR=%BuildRoot%\13\cmake\modules ^
+  -D SQLite3_INCLUDE_DIR=%BuildRoot%\Library\sqlite-3.36.0\usr\include ^
+  -D SQLite3_LIBRARY=%BuildRoot%\Library\sqlite-3.36.0\usr\lib\SQLite3.lib ^
 
   -G Ninja ^
   -S %SourceRoot%\swiftpm || (exit /b)