Refactored the orignal setup script as the build script

Necessary to organize this within the `bin` folder.

bin/build

@@ -0,0 +1,19 @@
+#! /usr/bin/env bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+IFS=$'\n\t'
+
+pushd .
+cd ~
+mkdir Projects
+cd Projects
+git clone https://github.com/bitbank2/bb_scd41
+cd bb_scd41/Linux
+make
+sudo apt install -y i2c-tools libi2c-dev
+sudo raspi-config nonint do_i2c 0
+
+popd
+make