Refactor Editor and module functions (#15)

Moved all module functions to separate utils modules

Replaced standard with standard with typescript

Extracted UI elements to separate component

Reviewed-on: https://git.siklos-chaneru.duckdns.org/Siklos/svg-layout-designer-react/pulls/15

src/Components/SVG/Elements/Container.tsx

@@ -1,5 +1,6 @@
 import * as React from 'react';
-import { getDepth, IContainerModel } from '../../../Interfaces/ContainerModel';
+import { IContainerModel } from '../../../Interfaces/ContainerModel';
+import { getDepth } from '../../../utils/itertools';
 import { Dimension } from './Dimension';
 
 export interface IContainerProps {
@@ -20,11 +21,11 @@ export class Container extends React.PureComponent<IContainerProps> {
     const transform = `translate(${Number(this.props.model.properties.x)}, ${Number(this.props.model.properties.y)})`;
 
     // g style
-    const defaultStyle = {
+    const defaultStyle: React.CSSProperties = {
       transitionProperty: 'all',
       transitionTimingFunction: 'cubic-bezier(0.4, 0, 0.2, 1)',
       transitionDuration: '150ms'
-    } as React.CSSProperties;
+    };
 
     // Rect style
     const style = Object.assign(