fix: organize imports and remove render.d.ts file

on-behalf-of: @Mermaid-Chart <hello@mermaidchart.com>

packages/mermaid-layout-elk/src/render.d.ts

@@ -1,19 +0,0 @@
-import type { InternalHelpers, LayoutData, RenderOptions, SVG } from 'mermaid';
-export declare const render: (
-  data4Layout: LayoutData,
-  svg: SVG,
-  {
-    common,
-    getConfig,
-    insertCluster,
-    insertEdge,
-    insertEdgeLabel,
-    insertMarkers,
-    insertNode,
-    interpolateToCurve,
-    labelHelper,
-    log,
-    positionEdgeLabel,
-  }: InternalHelpers,
-  { algorithm }: RenderOptions
-) => Promise<void>;