device: Add basic ram device

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
build: Fix flags override

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
libstd: Add dev_t and ino_t types

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
kernel: Add initial vfs stubs and a dummy fs implementation

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>