restructured repository based on following standards:

https://github.com/HW-Core/directory-structure

bin/bash_shared/functions.sh

@@ -0,0 +1,16 @@
+# par 1: hook_name
+function runHooks() {
+  hook_name="HOOKS_MAP_$1"
+  read -r -a SRCS <<< ${!hook_name}
+  echo "Running hooks: $hook_name"
+  for i in "${SRCS[@]}"
+  do
+  	$i # run registered hook
+  done
+}
+
+function registerHooks() {
+  hook_name="HOOKS_MAP_$1"
+  hooks=${@:2}
+  declare -g "$hook_name+=$hooks "
+}