chore: standardize shebangs, fix lint target, add .editorconfig

- Change all script shebangs to #!/usr/bin/env bash for portability
  (heredocs writing to installed systems keep #!/bin/bash)
- Remove || true from Makefile lint target so shellcheck errors fail the build
- Add .editorconfig for consistent formatting across editors

1 files changed, 1 insertions, 1 deletions

diff --git a/build.sh b/build.sh
index f17ee62..a169cae 100755
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # build.sh - Build the custom Arch ZFS installation ISO
 # Must be run as root
 #