Generate MAxO-MeSH predictions (#137)

As requested by Peter, this PR adds predictions between the Medical
Action Ontology (MAxO) and MeSH. I made a small number of curations
already, but will leave others from someone on their team to try on
their own.

scripts/generate_maxo_mesh_mappings.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+
+"""Generate mappings to Gilda from given PyOBO prefixes."""
+
+import click
+from more_click import verbose_option
+
+from biomappings.gilda_utils import append_gilda_predictions
+from biomappings.utils import get_script_url
+
+
+@click.command()
+@verbose_option
+def main():
+    """Generate MAxO mappings."""
+    provenance = get_script_url(__file__)
+    append_gilda_predictions("maxo", ["mesh"], provenance=provenance)
+
+
+if __name__ == "__main__":
+    main()