Highlight keywords inside blocks correctly

[awvwgk]

Highlighting inside blocks, i.e. %method ... end is currently not enabled. Requires to find the keywords for all blocks (62 total) and add separate keyword groups as in

" contain additional keywords for this block
syn region methodBlock start="%method" end="end"
         \ transparent keepend extend fold contains=startBlock,endBlock,orcaBlock,orcaMethodKeywords
...

" one named keywork group for every block required
syn keyword orcaMethodKeywords contained
         \ ...
...

" link all block keywords
hi def link orcaMethodKeywords Identifier
...

Maybe also contain orcaNumber and orcaString in methodBlock to highlight them correctly.