Fix(boards): 修复arduino mega pinout异常同时优化各板卡pinout相关block定义

boards/default_src/arduino_esp8266/blocks/pinout.js

@@ -0,0 +1,23 @@
+import * as Blockly from 'blockly/core';
+
+const PINOUT_HUE = '#555555';
+
+export const esp8266_pin = {
+    init: function () {
+        this.appendDummyInput()
+            .appendField(new Blockly.FieldImage(require('../media/boards/NodeMCU.png'), 510, 346, '*'));
+        this.setColour(PINOUT_HUE);
+        this.setTooltip();
+        this.setHelpUrl();
+    }
+};
+
+export const wemos_d1_mini_pin = {
+    init: function () {
+        this.appendDummyInput()
+            .appendField(new Blockly.FieldImage(require('../media/boards/WeMosD1Mini.png'), 510, 264, '*'));
+        this.setColour(PINOUT_HUE);
+        this.setTooltip();
+        this.setHelpUrl();
+    }
+};