Adding doc folder

docs/source/Installation.rst

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+Usage
+-----
+-----
+
+Installation
+------------
+
+To use QiboTn, first install it using pip:
+
+.. code-block:: console
+    (.venv) $pip install lumache
+
+Creating recipes
+----------------
+
+To retrieve a list of random ingredients,
+you can use the ``lumache.get_random_ingredients()`` function:
+
+.. autofunction:: lumache.get_random_ingredients
+>>> import lumache
+>>> lumache.get_random_ingredients()
+['shells', 'gorgonzola', 'parsley']
+