Add folder structure

[lenvm]

What

This pull request adds a folder structure to the Software folder.

Previously all files were added to the Software folder, without a folder hierarchy.

How

It does this by adding a src folder to the Software folder, and adding a folder structure within the src folder.

The reason for adding a src folder is found on the Arduino forum.
TL;DR: it is not possible to create a folder structure in an Arduino sketch without a src folder.

The following structure is implemented:

Software
|-- src
  |-- battery
  |-- devboard
    |-- can
    |-- debug
    |-- modbus
  |-- inverter
  |-- lib
    |-- adafruit-Adafruit_NeoPixel
    |-- eModbus-eModbus
    |-- pierremolinaro-acan2515
    |-- ThomasBarth-ESP32-CAN-Driver

The folders added for the libraries correspond to the name of the GitHub hosts and name of the GitHub repository where the files were taken from.

• adafruit/Adafruit_NeoPixel
• eModbus/eModbus
• pierremolinaro/acan2515
• ThomasBarth/ESP32-CAN-Driver

Why

The changes done in this pull request intend to do the following:

• make clear which are the main files that the user may interact with: Software.ino and USER_SETTINGS.h. This is achieved by only leaving these files outside the src folder.
• make clear which file has which purpose, for instance, previously you may have asked "is BYD-CAN.h used to describe a battery or an inverter?" Now it is immediately clear from the folder structure that BYD-CAN.h is included as an inverter file.
• make clear which files are taken from existing libraries. This should also allow easier updating of the libraries in case new releases of these libraries become available. This may be further simplified in the future by including these libraries as git submodules.
• make clear what kind of file is included using #include. Adding a folder structure and updating the #include statements accordingly, indirectly documents what kind of file (e.g. a file from a library, or a file specific to this development board) is included.

Note

In case any changes are needed to the folder structure proposed, please let me know, then I will update this pull request accordingly.

[dalathegreat]

Wow! I thought it wasn't possible to have a folder structure with the Arduino IDE, but you got it working! 🥇 Highly approved, thank you! This will make it so much easier for the users!