[TIMOB-23656] Windows: Implement Ti.Media.requestCameraPermissions/hasCameraPermissionsmethods to match iOS and Android behaviour

function showCamera() {
        Titanium.Media.showCamera({
            success : function(event) {
                // called when media returned from the camera
                Ti.API.debug('Photo taken successfully');
            },
            cancel : function() {
                // called when user cancels taking a picture
                Ti.API.debug('Photo cancelled.');
            },
            error : function(error) {
                Ti.API.debug('Photo errored.');
                // called when there's an error
                var a = Titanium.UI.createAlertDialog({
                    title : "Camera"
                });
                a.setMessage(JSON.stringify(error));
                a.show();
            },
            saveToPhotoGallery : true
        });
    }
    if (Ti.Media.hasCameraPermissions()) {
        showCamera();
    } else {
        Ti.Media.requestCameraPermissions(function(e) {
            if (e.success === true) {
                showCamera();
            } else {
                alert("Access denied, error: " + e.error);
            }
        });
    }