Panic Handler Improvement

[kassane]

Current implementation

zig-esp-idf-sample/imports/panic.zig

Lines 4 to 15 in a4eaae1

	/// panic handler for esp-idf
	pub fn panic(msg: []const u8, _: ?*@import("std").builtin.StackTrace, _: ?usize) noreturn {
	@setCold(true);
	sys.esp_log_write(log.default_level, "panic_handler", "PANIC: caused by %s - timestamp: %ul\n", msg.ptr, sys.esp_log_system_timestamp());
	//TODO: get the stack trace and print it!
	while (true) {
	asm volatile ("" ::: "memory");
	}
	}