feat: add singleFile param

Add singleFile param to output all in
one html file

asyncapi#61

hooks/01_removeNotRelevantParts.js

@@ -0,0 +1,25 @@
+const fs = require('fs');
+const path = require('path');
+
+module.exports = {
+    'generate:after': generator => {
+
+        const params = generator.templateParams;
+        const singleFile = params.singleFile === 'true';
+
+        if (singleFile) {
+
+            const jsDir = path.resolve(generator.targetDir, 'js');
+            const cssDir = path.resolve(generator.targetDir, 'css');
+
+            const callback = (error) => {
+                if (error) {
+                    throw error;
+                }
+            };
+
+            fs.rmdir(jsDir, {recursive: true}, callback);
+            fs.rmdir(cssDir, {recursive: true}, callback);
+        }
+    }
+};