[serialization_lib] Add support for FP8E4M3 and FP8E5M2

Signed-off-by: Won Jeon <won.jeon@arm.com>
Signed-off-by: Tai Ly <tai.ly@arm.com>
Change-Id: Ife50592890be020b6c6122581eeb2175c8f331e0
diff --git a/schema/tosa.fbs b/schema/tosa.fbs
index 171818d..1c2a85e 100644
--- a/schema/tosa.fbs
+++ b/schema/tosa.fbs
@@ -37,6 +37,8 @@
   FP16,
   BF16,
   SHAPE,
+  FP8E4M3,
+  FP8E5M2,
 }
 
 enum ResizeMode:uint32 {