Add pre-commit code formatting

Author: Serneum

README.md

@@ -24,6 +24,15 @@ cargo install cargo-edit
 cargo add panic_halt
 ```
 
+## Set Up Git Hooks
+
+The ambi_mock_client repository makes use of several Git hooks to ensure that code quality standards are met and consistent. To automatically configure these hooks for your local workspace, you can run the following:
+```bash
+./scripts/create-git-hooks
+```
+
+This will create symlinks to the Git hooks, preserving any hooks that you may have already configured.
+
 ## Running
 
 For a debug build
@@ -34,7 +43,7 @@ For a release build
 ```
 cargo run --release
 ```
-  
+
 ## Debugging
 
 To debug you can use either `cargo run` which will try and launch a gdb session connecting to a local OpenOCD instance

scripts/create-git-hooks

@@ -0,0 +1,29 @@
+# This script was taken from a StackOverflow answer that can be found at
+# https://stackoverflow.com/a/3464399
+#
+# This is used under the CC BY-SA 4.0 license:
+# https://creativecommons.org/licenses/by-sa/4.0/
+#
+# This file has been modified from its original form to include a BASE_DIR variable
+# and to include creation of the Git hooks directory if it does not already exist
+
+
+#!/bin/bash
+HOOK_NAMES="applypatch-msg pre-applypatch post-applypatch pre-commit prepare-commit-msg commit-msg post-commit pre-rebase post-checkout post-merge pre-receive update post-receive post-update pre-auto-gc"
+BASE_DIR=$(git rev-parse --show-toplevel)
+HOOK_DIR=$BASE_DIR/.git/hooks
+
+if [ ! -d $HOOK_DIR ]; then
+  mkdir $HOOK_DIR
+fi
+
+for hook in $HOOK_NAMES; do
+    # If the hook already exists, is executable, and is not a symlink
+    if [ ! -h $HOOK_DIR/$hook -a -x $HOOK_DIR/$hook ]; then
+        mv $HOOK_DIR/$hook $HOOK_DIR/$hook.local
+    fi
+    # create the symlink, overwriting the file if it exists
+    # probably the only way this would happen is if you're using an old version of git
+    # -- back when the sample hooks were not executable, instead of being named ____.sample
+    ln -s -f $BASE_DIR/scripts/hooks-wrapper $HOOK_DIR/$hook
+done

scripts/git/pre-commit

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+set -eo pipefail
+
+cargo fmt
+
+# Stage changes to files that were already staged
+git update-index --again

scripts/hooks-wrapper

@@ -0,0 +1,12 @@
+# This script was taken from a StackOverflow answer that can be found at
+# https://stackoverflow.com/a/3464399
+# This is used under the CC BY-SA 4.0 license:
+# https://creativecommons.org/licenses/by-sa/4.0/
+
+#!/bin/bash
+if [ -x $0.local ]; then
+    $0.local "$@" || exit $?
+fi
+if [ -x scripts/git/$(basename $0) ]; then
+    scripts/git/$(basename $0) "$@" || exit $?
+fi