Add dev tooling to use precious

.gitignore

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+/node_modules
+/package-lock.json
+/package.json
+.\#*
+\#*\#

dev/bin/install-dev-tools.sh

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+#!/bin/bash
+
+set -eo pipefail
+
+function run () {
+    echo $1
+    eval $1
+}
+
+function install_tools () {
+    curl --silent --location \
+         https://raw.githubusercontent.com/houseabsolute/ubi/master/bootstrap/bootstrap-ubi.sh |
+        sh
+    run "rustup component add clippy"
+    run "ubi --project houseabsolute/precious --in ~/bin"
+    run "npm install prettier"
+}
+
+if [ "$1" == "-v" ]; then
+    set -x
+fi
+
+mkdir -p $HOME/bin
+
+set +e
+echo ":$PATH:" | grep --extended-regexp ":$HOME/bin:" >& /dev/null
+if [ "$?" -eq "0" ]; then
+    path_has_home_bin=1
+fi
+set -e
+
+if [ -z "$path_has_home_bin" ]; then
+    PATH=$HOME/bin:$PATH
+fi
+
+install_tools
+
+echo "Tools were installed into $HOME/bin."
+if [ -z "$path_has_home_bin" ]; then
+     echo "You should add $HOME/bin to your PATH."
+fi
+
+exit 0

git/hooks/pre-commit.sh

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+#!/bin/bash
+
+status=0
+
+PRECIOUS=$(which precious)
+if [[ -z $PRECIOUS ]]; then
+    PRECIOUS=./bin/precious
+fi
+
+"$PRECIOUS" lint -s
+if (( $? != 0 )); then
+    status+=1
+fi
+
+exit $status

git/setup.pl

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+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+
+use Cwd qw( abs_path );
+
+symlink_hook('pre-commit');
+
+sub symlink_hook {
+    my $hook = shift;
+
+    my $dot  = ".git/hooks/$hook";
+    my $file = "git/hooks/$hook.sh";
+    my $link = "../../$file";
+
+    if ( -e $dot ) {
+        if ( -l $dot ) {
+            return if readlink $dot eq $link;
+        }
+        warn "You already have a hook at $dot!\n";
+        return;
+    }
+
+    symlink $link, $dot;
+}

precious.toml

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+exclude = [
+  "target",
+]
+
+[commands.prettier]
+type    = "both"
+include = [ "**/*.md", "**/*.yml" ]
+cmd     = [ "./node_modules/.bin/prettier", "--no-config" ]
+lint_flags = "--check"
+tidy_flags = "--write"
+ok_exit_codes = 0
+lint_failure_exit_codes = 1
+ignore_stderr = [ "Code style issues" ]
+
+[commands.omegasort-gitignore]
+type = "both"
+include = "**/.gitignore"
+cmd = [ "omegasort", "--sort", "path", "--unique" ]
+lint_flags = "--check"
+tidy_flags = "--in-place"
+ok_exit_codes = 0
+lint_failure_exit_codes = 1
+ignore_stderr = [
+    "The .+ file is not sorted",
+    "The .+ file is not unique",
+]