Add Windows build too

SConstruct

@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 import os
 import sys
+import subprocess
 
 env = SConscript("godot-cpp/SConstruct")
 
@@ -17,12 +18,41 @@ env.Append(CPPPATH=["src/"])
 sources = Glob("src/*.cpp")
 
 if env["platform"] == "macos":
+    target = "demo/addons/godot_ultraleap_plugin/bin/libgdultraleap.{}.{}.framework/libgdultraleap.{}.{}".format(
+        env["platform"], env["target"], env["platform"], env["target"]
+    )
+
     library = env.SharedLibrary(
-        "demo/addons/godot_ultraleap_plugin/bin/libgdultraleap.{}.{}.framework/libgdultraleap.{}.{}".format(
-            env["platform"], env["target"], env["platform"], env["target"]
-        ),
+        target,
         source=sources,
     )
+
+    env.Append(LIBS=['LeapC'])
+
+    env.Append(LIBPATH = ["/Applications/Ultraleap Hand Tracking Service.app/Contents/LeapSDK/lib"])
+    env.Append(CPPPATH = ["/Applications/Ultraleap Hand Tracking Service.app/Contents/LeapSDK/include"])
+
+    def sys_exec(args):
+        proc = subprocess.Popen(args, stdout=subprocess.PIPE, text=True)
+        (out, err) = proc.communicate()
+        return out.rstrip("\r\n").lstrip()
+
+    def change_rpath(self, arg, env, executor = None):
+        sys_exec(["install_name_tool", "-change", "@rpath/%s" % "libLeapC.5.dylib", "@loader_path/../%s" % "libLeapC.5.dylib", target])
+
+    change_rpath_action = Action('', change_rpath)
+
+    AddPostAction(library, change_rpath_action)
+elif env["platform"] == "windows":
+    library = env.SharedLibrary(
+        "demo/addons/godot_ultraleap_plugin/bin/libgdultraleap{}{}".format(env["suffix"], env["SHLIBSUFFIX"]),
+        source=sources,
+    )
+    env.Append(LIBS=['LeapC'])
+    env.Append(LIBPATH = ['C:/Program Files/Ultraleap/LeapSDK/lib/x64'])
+elif env["platform"] == "android":
+    print("Android is not supported yet")
+    exit(1)
 else:
     library = env.SharedLibrary(
         "demo/addons/godot_ultraleap_plugin/bin/libgdultraleap{}{}".format(env["suffix"], env["SHLIBSUFFIX"]),