Add Installation wiki page

Author: andrealaffly

Installation.md

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+# Installation
+
+This page guides you through installing the ACSL Flight Stack.
+
+## 1. Clone the Repository
+
+```bash
+git clone https://github.com/andrealaffly/ACSL-flightstack.git
+```
+
+## 2. Install Dependencies
+
+- ROS2 Foxy or Galactic (see [ROS2 Install Guide](https://docs.ros.org/en/foxy/Installation.html))
+- Eigen3 (usually `sudo apt install libeigen3-dev`)
+- MAVROS, MAVLink, GeographicLib (for offboard control)
+
+```bash
+sudo apt install ros-foxy-mavros ros-foxy-mavlink ros-foxy-geographic-msgs
+```
+
+- Additional dependencies may be required based on your hardware and OS.
+
+## 3. Build the Workspace
+
+```bash
+cd ACSL-flightstack
+colcon build --symlink-install
+source install/setup.bash
+```
+
+## 4. Configure Your Hardware
+
+- Ensure your Pixhawk is flashed with PX4 firmware
+- Confirm your motion capture or GNSS system is operational
+- Connect your onboard computer (e.g., Jetson) to Pixhawk via serial/USB
+
+## 5. Test the Installation
+
+- Run:
+
+```bash
+ros2 launch acsl_flightstack bringup.launch.py
+```
+
+- If everything is set up correctly, the UAV should be ready for software-in-the-loop (SITL) or hardware tests