Move (add) requirements from build.yml to requirements.txt

Author: jepler

requirements.txt

@@ -2,10 +2,18 @@
 # SPDX-FileCopyrightText: Copyright (c) 2020 jepler for Unpythonic Networks
 #
 # SPDX-License-Identifier: MIT
-sphinx<4
-recommonmark==0.6.0
-sphinxcontrib-svg2pdfconverter==0.1.0
 astroid
-sphinx-autoapi
-isort
 black
+isort
+pre-commit
+recommonmark==0.6.0
+sphinx<4
+sphinx-autoapi
+sphinxcontrib-svg2pdfconverter==0.1.0
+sphinx-rtd-theme
+setuptools
+wheel
+twine
+readme_renderer
+testresources
+circuitpython-build-tools