Update installation instructions

This MR improves the installation instructions and adds pre-commit by default on every new bdt dev create environment that is created.

bob/devtools/build.py

@@ -349,6 +349,7 @@ def parse_dependencies(recipe_dir, config):
     requirements += [
         "pip",  # required for installing further packages
         "ipdb",  # for debugging
+        "pre-commit",  # for quality-assurance
     ]
 
     # remove duplicates without affecting the order