Add instructions to build on Fedora

[yuripourre]

#!/bin/bash

echo "Installing dependencies..."
sudo dnf install -y cmake gcc-c++ qt6-qtbase-devel qt6-qttools-devel qt6-qtbase qt6-qttools make

echo "Setting up build directory..."
rm -rf build
mkdir -p build
cd build

echo "Configuring project..."
cmake .. -DCMAKE_BUILD_TYPE=Release

echo "Building project..."
make -j$(nproc)

echo "Build completed successfully!"
echo "Executable: build/D1GraphicsTool"

[eisnerguy1]

Was able to use slightly modified steps to successfully build on macOS 😃 👍🏻

I also used the d1-graphics-tool/resources/icon.svg file to generate an .icns file for macOS as well:
D1GraphicsTool.icns.zip

[AJenbo]

@eisnerguy1 feel free to make a CI job for it, that way we can use it for releases

[eisnerguy1]

Not sure how to do that honestly 🤔 The steps I used were these. They may not be the totally correct/appropriate steps but, it does build on macOS with these Terminal commands:

cd d1-graphics-tool-master

mkdir build
cd build

cmake ..

make

I did also try less modified versions of yuripourre's steps (just without the dependencies section) though and it does build, albeit with a slightly smaller D1GraphicsTool.app file 🤔 Not sure why that is.

Probably would need to swap out the dependencies section with something like this:

1. Install Homebrew if not already installed:
   /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)

2. Run this command to install dependencies:
   brew install cmake make qt6 gcc

Both built apps seem to work without issue. Still can't figure out the size difference when using slightly different build steps.