Update categories and keywords sections

Author: ivankravets

package.json

@@ -10,15 +10,17 @@
   "description": "Professional development environment for Embedded, IoT, Arduino, CMSIS, ESP-IDF, FreeRTOS, libOpenCM3, mbed OS, Pulp OS, SPL, STM32Cube, Zephyr RTOS, ARM, AVR, Espressif (ESP8266/ESP32), FPGA, MCS-51 (8051), MSP430, Nordic (nRF51/nRF52), NXP i.MX RT, PIC32, RISC-V, STMicroelectronics (STM8/STM32), Teensy",
   "categories": [
     "Programming Languages",
+    "Linters",
     "Debuggers",
+    "Testing",
     "Other"
   ],
   "keywords": [
     "embedded",
-    "debug",
-    "c",
-    "c++",
-    "microcontroller"
+    "microcontroller",
+    "arm",
+    "risc-v",
+    "arduino"
   ],
   "main": "./dist/extension",
   "icon": "resources/platformio-logo.png",