maint: add bin/build-inplace.sh

Author: oscarbenjamin

bin/build_inplace.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+#
+# Build the flint._flint module in place.
+
+C_INCLUDE_PATH=.local/include/ LIBRARY_PATH=.local/lib/ python setup.py build_ext --inplace