Enhance building instructions for Windows and macOS

Updated Windows build instructions and added macOS installation step.

Author: bmorcelli

docs/development/building-from-source.md

@@ -24,7 +24,7 @@ Requirements
 
 ```sh
 sudo apt update
-sudo apt install python3-pip git
+sudo apt install -y --no-install-recommends python3-pip git gcc-multilib libc6-dev-i386
 pip3 install platformio
 export PATH=$PATH:~/.local/bin
 source ~/.bashrc
@@ -58,19 +58,30 @@ pio run -e m5stack-cplus1_1 -t build-firmware
 
 ### Windows
 
+# Windows build
 * Install [Git](https://git-scm.com/download/win)
 * Install Python using the Microsoft Store
 * Install VSCode
-* Download or Git clone the repository
-* Within VSCode, `File -> Open Folder...` and select the folder you just extracted/cloned
-* If it doesn't prompt to install PlatformIO, click on "Extentions" (4 swares icon on the left) and install PlatformIO (and restart VSCode)
+* Install MSYS2 https://www.msys2.org/ at default path
+* Open C:\msys64\ucrt64.exe
+* Run on UCRT64 terminal: `pacman -S --needed mingw-w64-i686-toolchain`
+* Add C:\msys64\mingw32\bin to PATH, cmd: `setx PATH "%PATH%;C:\msys64\mingw32\bin"`
+* Download the repository and extract it somewhere you want
+* Within VSCode, `File>Open Folder...` and select the folder of the firmware
+* If it doesn't prompt to install Platformio, click on "Extentions" (4 swares icon on the left) and install Platformio (and restart VsCode)
 * In the Status bar (down on the screen) click where is written `Default (Bruce-main)`
-* A menu will appear in the Search bar (up on screen), select your device "env"
+* A little Menu will appear in the Search bar (up on screen), select your device "env"
 * Now click in the :heavy_check_mark: Icon in the Status Bar (beside the cute little House), it will start building your project
-* If you want to upload directly, you can do it clicking in the "->" arrow to upload to your device
+* if you want to upload directly, you can do it clicking in the "->" arrow to upload to your device
 * If you want to output a binary you can flash, use the "build-firmware" Custom task in the PlatformIO Extension Sidebar Menu named "project tasks"
 
 
+### On MAC
+* run on terminal: `xcode-select --install`
+
+
 ## GitHub Actions
 
 You can use the Github workflow to build the binaries for you with Actions, the last releases are available in the Artifacts, but you can fork the project and make the changes you want to this, then build on your using your own Actions.
+
+