makerst: Print colored output for easier visual grepping

This is automatically enabled on all platforms including
Windows 10 and later, whenever a TTY environment is detected.

In non-TTY environments such as CI, this can be forced using the
`--color` command line argument.

misc/hooks/pre-commit-make-rst

@@ -9,4 +9,4 @@ if [[ "$py_ver" != "3" ]]; then
   PYTHON+=3
 fi
 
-$PYTHON doc/tools/make_rst.py doc/classes modules --dry-run
+$PYTHON doc/tools/make_rst.py doc/classes modules --dry-run --color