Automatically enable passing behavior tests

behavior_tests.sh

#!/usr/bin/env bash

IFS=":"

rg --json "if \(builtin.zig_backend == .stage2_arm\) return error.SkipZigTest;" test/behavior/ | jq -r 'select(.type == "match") | "\(.data.path.text):\(.data.line_number)"' | while read -r file line; do
    cp "$file" "$file.bak"
    sed -i "$line s/^/\/\//" "$file"

    if "$PWD/zig-out/bin/zig" test -target arm-linux-gnu test/behavior.zig; then
        rm "$file.bak"
    else
        mv "$file.bak" "$file"
    fi
done