chore: add Bitwarden credentials helper

private_dot_local/bin/executable_git-credential-rbw

@@ -0,0 +1,47 @@
+#!/opt/homebrew/Cellar/bash/5.2.21/bin/bash
+
+# rbw git-credential helper
+# Based on https://github.com/lastpass/lastpass-cli/blob/master/contrib/examples/git-credential-lastpass
+
+# A credential helper for git to retrieve usernames and passwords from rbw.
+# For general usage, see https://git-scm.com/docs/gitcredentials.
+# Here's a quick version:
+# 1. Put this somewhere in your path.
+# 2. git config --global credential.helper rbw
+
+declare -A params
+
+if [ "x$1" == "xget" ]; then
+    read line
+    while [ -n "$line" ]; do
+        key=${line%%=*}
+        value=${line#*=}
+        params[$key]=$value
+        read line
+    done
+
+    if [ "x${params['protocol']}" != "xhttps" ]; then
+        exit
+    fi
+
+    if [ -z "${params["host"]}" ]; then
+        exit
+    fi
+
+    rbw ls > /dev/null 2>&1
+    if [ $? -ne 0 ]; then
+        echo "Please login to rbw to use git credential helper" > /dev/stderr
+        exit
+    fi
+
+    user=`rbw get --full ${params["host"]} | grep "Username:" | cut -d' ' -f2-`
+    pass=`rbw get ${params["host"]}`
+
+    if [ "x$user" == "x" ] || [ "x$pass" == "x" ]; then
+        echo "Couldn't find host in rbw DB." > /dev/stderr
+        exit
+    fi
+
+    echo username=$user
+    echo password=$pass
+fi