Extensions do not have the right license

Following approved extensions don't have the MIT license:

No license:

• Seeed-Studio/pxt-grove null
• mbitfun/pxt-katakana null
• chevyng/pxt-ucl-junkrobot null
• LaboratoryForPlayfulComputation/pxt-BlockyTalkyBLE null
• pizayanz/pxt-linebeacon null
• sparkfun/pxt-weather-bit null
• k8robotics/pxt-k8 null
• sparkfun/pxt-moto-bit null
• sparkfun/pxt-gamer-bit null
• PaulDFoster/pxt-microbit-GY521 null
• Annikken/pxt-Andee null
• Tinkertanker/pxt-tinkercademy-microbot null
• Tinkertanker/pxt-oled-ssd1306 other
• Tinkertanker/pxt-range-vl53l0x null
• Tinkertanker/microDriver_SHT2x null
• Tinkertanker/uDriver_PCA9585 null

Following extensions have some other license

• srs/pxt-bitbot { key: 'apache-2.0',
  name: 'Apache License 2.0',
  spdx_id: 'Apache-2.0',
  url: 'https://api.github.com/licenses/apache-2.0',
  node_id: 'MDc6TGljZW5zZTI=' }

• PiSupply/pxt-iot-lora-node { key: 'gpl-3.0',
  name: 'GNU General Public License v3.0',
  spdx_id: 'GPL-3.0',
  url: 'https://api.github.com/licenses/gpl-3.0',
  node_id: 'MDc6TGljZW5zZTk=' }