Update installation-mac.rst to include uv

`uv` works as an installation method. This commit adds the instructions for how to use it.

Author: SecKatie

source/components/software/nk-app2/installation-mac.rst

@@ -1,10 +1,45 @@
 macOS Install
 =============
 
+Installing the Nitrokey App 2 via uv
+-------------------------------------
+
+This is the simplest and fastest way to install the Nitrokey App 2 on macOS using `uv`, an extremely fast Python package manager.
+
+1. Install `uv` if it is not already installed:
+
+   .. code-block:: zsh
+
+      curl -LsSf https://astral.sh/uv/install.sh | sh
+
+   Alternatively, if you have Homebrew:
+
+   .. code-block:: zsh
+
+      brew install uv
+
+2. Install the Nitrokey App:
+
+   .. code-block:: zsh
+
+      uv tool install nitrokeyapp
+
+To update the app:
+
+.. code-block:: zsh
+
+   uv tool upgrade nitrokeyapp
+
+To run the application:
+
+.. code-block:: zsh
+
+   nitrokeyapp
+
 Installing the Nitrokey App 2 via Pipenv
-----------------------------------------
+-----------------------------------------
 
-This is the simplest way for now to install the Nitrokey App 2 on macOS. Further methods are being worked on.
+This is an alternative way to install the Nitrokey App 2 on macOS.
 
 1. `Install <https://pipenv.pypa.io/en/latest/installation.html>`__ pipenv if it is not already installed.
 
@@ -57,7 +92,7 @@ To run the application:
 
       cd nitrokeyapp
    
-2. Update the app:
+2. Run the app:
 
    .. code-block:: zsh