Added setup scripts

setup.d/10-shellcheck.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+if ! command -v shellcheck > /dev/null; then
+    sudo apt update > /dev/null && sudo apt install shellcheck > /dev/null;
+    echo "Installed Shellcheck"
+fi

setup.d/10-starship.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+if ! test -x /usr/local/bin/starship; then
+    curl -fsSL https://starship.rs/install.sh | bash  
+fi
+
+if ! grep starship ~/.bashrc > /dev/null; then
+    echo "eval \"\$(starship init bash)\"" >> ~/.bashrc
+fi