Add glyph-images of HNG-KAR.

Add glyph-images of HNG-KAR.
(U+5F81): Separate UU+5F81.
(HNG-KAR0837-0): New character; use `<-denotational' for U+5F81.
(U+5FAE-itaiji-003): New character; use `<-simplified@component' for
U+5FAE-itaiji-004; use `<-simplified@component/surround-from-above'
for U+5FAE.
(U+5F99): Separate UU+5F99.
(HNG-KAR0843-0): New character; use `<-denotational' for U+5F99.
(U+5FAE-itaiji-004): New character; use
`<-simplified@component/surround-from-above' for U+5FAE.
(U+5FA9): Apply new conventions for glyph granularity.
(U+5FB4): Separate UU+5FB4.
(HNG-KAR0838-0): New character; use `<-denotational' for U+5FB4.