Migrate Nina firmwares to plugin system (#208)

* move boards to new_boards in order to add to plugin

* move nina boards to the plugin system

* remove useless sketches, in the plugin they are hardcoded

* remove core installation from CI, this is no more required with the plugin system

* move all the info required to support a plugin board inside `new_boards.json` file

This way we have to modify this file only to add support for new boards.
The `generate_boards_json()` function have been split: this way we can remove the old one when the time comes.

* fix formatting

* fix wrong loader for rp2040

---------

Co-authored-by: Alessio Perugini <[email protected]>

Author: umbynos

.github/workflows/generate-index.yml

@@ -44,12 +44,8 @@ jobs:
           arduino-cli core update-index -v
           arduino-cli version
           arduino-cli core install arduino:samd@${{ env.SAMD_V }} -v
-          arduino-cli core install arduino:megaavr@${{ env.MEGAAVR_V }} -v
-          arduino-cli core install arduino:mbed_nano@${{ env.MBED_NANO_V }} -v
         env:
           SAMD_V: 1.8.11
-          MEGAAVR_V: 1.8.7
-          MBED_NANO_V: 2.4.1
 
       - name: Install dependencies
         run: |

firmwares/getversion/arduino.mbed_nano.nanorp2040connect/CheckFirmwareVersion.ino.elf

@@ -3,76 +3,8 @@
     "moduleName": "WINC1500",
     "versions": ["19.4.4", "19.5.2", "19.5.4", "19.6.1"]
   },
-  "arduino:samd:mkrwifi1010": {
-    "moduleName": "NINA",
-    "versions": [
-      "1.0.0",
-      "1.1.0",
-      "1.2.1",
-      "1.2.2",
-      "1.2.3",
-      "1.2.4",
-      "1.3.0",
-      "1.4.0",
-      "1.4.1",
-      "1.4.2",
-      "1.4.3",
-      "1.4.4",
-      "1.4.5",
-      "1.4.6",
-      "1.4.7",
-      "1.4.8",
-      "1.5.0"
-    ]
-  },
-  "arduino:samd:nano_33_iot": {
-    "moduleName": "NINA",
-    "versions": [
-      "1.0.0",
-      "1.1.0",
-      "1.2.1",
-      "1.2.2",
-      "1.2.3",
-      "1.2.4",
-      "1.3.0",
-      "1.4.0",
-      "1.4.1",
-      "1.4.2",
-      "1.4.3",
-      "1.4.4",
-      "1.4.5",
-      "1.4.6",
-      "1.4.7",
-      "1.4.8",
-      "1.5.0"
-    ]
-  },
   "arduino:samd:mkrvidor4000": {
     "moduleName": "NINA",
     "versions": ["1.0.0", "1.1.0"]
-  },
-  "arduino:megaavr:uno2018": {
-    "moduleName": "NINA",
-    "versions": [
-      "1.2.1",
-      "1.2.2",
-      "1.2.3",
-      "1.2.4",
-      "1.3.0",
-      "1.4.0",
-      "1.4.1",
-      "1.4.2",
-      "1.4.3",
-      "1.4.4",
-      "1.4.5",
-      "1.4.6",
-      "1.4.7",
-      "1.4.8",
-      "1.5.0"
-    ]
-  },
-  "arduino:mbed_nano:nanorp2040connect": {
-    "moduleName": "NINA",
-    "versions": ["1.4.5", "1.4.6", "1.4.7", "1.4.8", "1.5.0"]
   }
 }