🏗️(bin) merge duplicated folders scripts and bin

Few scripts were duplicated between the scripts and the bin folders.
Reorganize the scripts in a common folder, and align filenames to
follow the same rule.

bin/install-hooks.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+mkdir -p "$(dirname -- "${BASH_SOURCE[0]}")/../.git/hooks/"
+PRE_COMMIT_FILE="$(dirname -- "${BASH_SOURCE[0]}")/../.git/hooks/pre-commit"
+
+cat <<'EOF' >$PRE_COMMIT_FILE
+#!/bin/bash
+
+# directories containing potential secrets
+DIRS="."
+
+bold=$(tput bold)
+normal=$(tput sgr0)
+
+# allow to read user input, assigns stdin to keyboard
+exec </dev/tty
+
+for d in $DIRS; do
+	# find files containing secrets that should be encrypted
+	for f in $(find "${d}" -type f -regex ".*\.enc\..*"); do
+		if ! $(grep -q "unencrypted_suffix" $f); then
+			printf '\xF0\x9F\x92\xA5 '
+			echo "File $f has non encrypted secrets!"
+			exit 1
+		fi
+	done
+done
+EOF
+
+chmod +x $PRE_COMMIT_FILE

bin/update-git-submodule.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+git submodule update --init --recursive
+git submodule foreach 'git fetch origin; git checkout $(git rev-parse --abbrev-ref HEAD); git reset --hard origin/$(git rev-parse --abbrev-ref HEAD); git submodule update --recursive; git clean -dfx'