Fix typescript definitions for enums

[donalffons]

The following valid code

const quat = new oc.gp_Quaternion_1();
quat.SetEulerAngles(oc.gp_EulerSequence.gp_Extrinsic_XYZ, 0, 0, 0));

results in a typescript error:

(property) gp_Extrinsic_XYZ: {}
Argument of type '{}' is not assignable to parameter of type 'gp_EulerSequence'.
  Type '{}' is missing the following properties from type 'gp_EulerSequence': gp_EulerAngles, gp_YawPitchRoll, gp_Extrinsic_XYZ, gp_Extrinsic_XZY, and 22 more.ts(2345)

[donalffons]

The previous syntax in the "valid code" was incorrect. Instead, this should be:

const quat = new oc.gp_Quaternion_1();
quat.SetEulerAngles(oc.gp_EulerSequence.gp_Extrinsic_XYZ.value, 0, 0, 0));

It's tricky to figure this out, since Emscripten doesn't seem to error. Another example:

The following code causes no typescript error and no runtime error. It is however, incorrect.

myContext.SetDisplayMode_1(oc.AIS_DisplayMode.AIS_Shaded, true);
console.log(myContext.DisplayMode()); // outputs '0', should be '1'

The following code causes a typescript error, but works correctly at runtime

myContext.SetDisplayMode_1(oc.AIS_DisplayMode.AIS_Shaded.value, true);
console.log(myContext.DisplayMode()); // outputs '1'