Kernel: You can now read/write to RamInodes

RamFS should be stored on physical pages and not in kmalloc, but
that will be implemented later :)

kernel/include/kernel/FS/RamFS/Inode.h

@@ -30,6 +30,9 @@ namespace Kernel
 
 		virtual BAN::StringView name() const override { ASSERT_NOT_REACHED(); }
 
+		virtual BAN::ErrorOr<size_t> read(size_t, void*, size_t) override;
+		virtual BAN::ErrorOr<size_t> write(size_t, const void*, size_t)	override;
+
 		void add_link() { m_inode_info.nlink++; }
 
 	protected: