feat(servo): add pinInfo

Author: urish

src/servo-element.ts

@@ -1,4 +1,5 @@
 import { customElement, html, LitElement, property } from 'lit-element';
+import { ElementPin } from './pin';
 
 @customElement('wokwi-servo')
 export class ServoElement extends LitElement {
@@ -16,6 +17,12 @@ export class ServoElement extends LitElement {
   /** Servo horn color (as an HTML color) */
   @property() hornColor = '#ccc';
 
+  readonly pinInfo: ElementPin[] = [
+    { name: 'GND', x: 0, y: 50, signals: [{ type: 'power', signal: 'GND' }] },
+    { name: 'V+', x: 0, y: 59.5, signals: [{ type: 'power', signal: 'VCC' }] },
+    { name: 'PWM', x: 0, y: 69, signals: [{ type: 'pwm' }] },
+  ];
+
   hornPath() {
     switch (this.horn) {
       case 'cross':