Add readthedocs configuration file

Signed-off-by: Robert Winkler <rwinkler@antmicro.com>

Author: rw1nkler

.readthedocs.yml

@@ -0,0 +1,16 @@
+# .readthedocs.yml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# Build documentation in the docs/ directory with Sphinx
+sphinx:
+  configuration: docs/conf.py
+
+formats:
+ - htmlzip
+
+conda:
+  environment: environment.yml