update installation docs

Author: jhamman

docs/user-guide/installation.rst

@@ -1,6 +1,18 @@
 Installation
 ============
 
+Required dependencies
+---------------------
+
+Required dependencies include:
+
+- Python (3.11 or later)
+- `packaging <https://packaging.pypa.io>`_ (22.0 or later)
+- `numpy <https://numpy.org>`_ (1.25 or later)
+- `numcodecs[crc32c] <https://numcodecs.readthedocs.io>`_ (0.14 or later)
+- `typing_extensions <https://typing-extensions.readthedocs.io>`_ (4.9 or later)
+- `donfig <https://donfig.readthedocs.io>`_ (0.8 or later)
+
 pip
 ---