Custom Field add in Umbraco CMS

This is folder structure
\App_Plugins\ChannelSelection
channelselection.controller.js
channelselection.html
package.manifest

file contain
------------channelselection.controller.js--------------------
angular.module("umbraco")
    .controller("My.ChannelSelectionController",
    function ($scope) {
        $.ajax({
            url: "/umbraco/api/Portfolio/GetDropdownList",
            dataType: "json",
            type: "GET",
            error: function () {
                //alert(" An error occurred.");
            },
            success: function (data) {
                console.log(JSON.stringify(data));
                $('#fillvalues').find("option").remove();
                var option = $("<option/>");
               // option.attr("value", "").text("Select Channel");
                $("#fillvalues").append(option);
             
                $.each(data, function (i, product) {

                    $.each(product.Channel, function (j, productj) {

                        option = $("<option/>");
                        option.attr("value", productj.Id).text(productj.Name);
                        $("#fillvalues").append(option);
                       // contentc += '    <li><a href="' + productj.link + '"><img src="' + productj.Image + '" alt="' + productj.Name + '" /></a></li>';

                    });
                });
                $('#fillvalues').val($scope.model.value);
            }
        });
        //alert('Control loaded');
    });

--------------------channelselection.html-------------
<div ng-controller="My.ChannelSelectionController">
    <select id="fillvalues"  ng-model="model.value"></select>
 
</div>
--------------------package.manifest---------------
{  
    //you can define multiple editors  
    propertyEditors: [    
        {
            /*this must be a unique alias*/
            alias: "My.ChannelSelection",
            /*the name*/
            name: "Channel Selection",
            /*the html file we will load for the editor*/
            editor: {
                view: "~/App_Plugins/ChannelSelection/channelselection.html"
            }
        }
    ]
    ,
    //array of files we want to inject into the application on app_start
    javascript: [
        '~/App_Plugins/ChannelSelection/channelselection.controller.js'
    ]
}