Add int8 Core ML variant (embedding table quantized)

.gitattributes

@@ -40,3 +40,4 @@ coreml/all_minilm_l6_v2_coreml_fp16.pte filter=lfs diff=lfs merge=lfs -text
 coreml/all_minilm_l6_v2_coreml_fp32.pte filter=lfs diff=lfs merge=lfs -text
 vulkan/all_minilm_l6_v2_vulkan_fp32.pte filter=lfs diff=lfs merge=lfs -text
 vulkan/all_minilm_l6_v2_vulkan_fp16.pte filter=lfs diff=lfs merge=lfs -text
+coreml/all_minilm_l6_v2_coreml_int8.pte filter=lfs diff=lfs merge=lfs -text

coreml/all_minilm_l6_v2_coreml_int8.pte

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f45794344ee2bc8eb991f125bb92ed4fdca1fdb1968601d68a8ff29d2b12da23
+size 22817740