scripts: Rewrite lint scripts

Rewrite lint scripts to report what they do and if they pass. In the
case they fail list the files that caused the failure, except for
clang-format, which will be slow to run of every file individually
(should just run `make fmt` anyway). Also add a script to run all the
lints in order with a single command.

Signed-off-by: Tim Crawford <tcrawford@system76.com>

scripts/lint/util.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-only
+
+passed() {
+    echo -e "\x1B[32mPASSED\x1B[0m"
+}
+
+skipped() {
+    local reason=$1
+    echo -e "\x1B[33mSKIPPED\x1B[0m ($reason)"
+}
+
+failed() {
+    echo -e "\x1B[31mFAILED\x1B[0m"
+}