Kernel: remove message from BAN::Error

We don't store the error message anymore in BAN::Error.
Instead we store a error code that can be mapped into a string.
This allows BAN::Error to only take 4 bytes instead of 128.

We should also make some kernel initialization just panic instead
of returning errors since they are required for succesfull boot
anyway.

kernel/include/kernel/Errors.h

@@ -0,0 +1,39 @@
+#pragma once
+
+#include <BAN/StringView.h>
+
+namespace Kernel
+{
+
+	enum class ErrorCode : uint32_t
+	{
+		None,
+		ACPI_NoRootSDT,
+		ACPI_NoSuchHeader,
+		ACPI_RootInvalid,
+		PS2_Timeout,
+		PS2_SelfTest,
+		PS2_Reset,
+		PS2_UnsupportedDevice,
+		Ext2_Invalid,
+		Ext2_Corrupted,
+		Ext2_NoInodes,
+		Storage_Boundaries,
+		Storage_GPTHeader,
+		ATA_NoLBA,
+		ATA_AMNF,
+		ATA_TKZNF,
+		ATA_ABRT,
+		ATA_MCR,
+		ATA_IDNF,
+		ATA_MC,
+		ATA_UNC,
+		ATA_BBK,
+		Font_FileTooSmall,
+		Font_Unsupported,
+		Count
+	};
+
+	BAN::StringView error_string(ErrorCode);
+
+}