ADD: get all category handler

components/category/categoryController.js

@@ -0,0 +1,14 @@
+const catchAsync = require('../../globalErrorHandler/catchAsync')
+const AppError = require('../../globalErrorHandler/AppError')
+const Category = require('./categoryModel')
+const categoryService = require('./categoryService')
+
+exports.getAllCategories = catchAsync(async (req, res, next) => {
+    const categories = await categoryService.getAllCategories()
+
+    res.status(200).json({
+        status: 'success',
+        results: categories.length,
+        data: categories,
+    })
+})