message: Update vim syntax file to highlight core ops
diff: @@ -12,6 +12,7 @@ syn keyword mlirType memref tensor vector
  syntax keyword mlirKeywords extfunc cfgfunc mlfunc for to step return
  syntax keyword mlirConditional if else
  +syntax keyword mlirCoreOps dim addf addi subf subi mulf muli cmpi select constant affine_apply call call_indirect extract_element getTensor memref_cast tensor_cast load store alloc dealloc dma_start dma_wait
  syn match mlirInt "-\=\<\d\+\>"
  syn match mlirFloat "-\=\<\d\+\.\d\+\>"
  @@ -23,6 +24,7 @@ syn region mlirString matchgroup=mlirString start=+"+ end=+"+
  hi def link mlirComment Comment
  hi def link mlirKeywords Statement
  +hi def link mlirCoreOps Statement
  hi def link mlirInt Constant
  hi def link mlirType Type
  hi def link mlirMapOutline PreProc
  