Make shared static this() encoding table compilable

[zhad3]

On Monday, 14 March 2022 at 22:20:42 UTC, rikki cattermole wrote:
>
> The recommended solution by Unicode is to use Trie tables for 
> Look Up Tables (LUTs).
>
> https://en.wikipedia.org/wiki/Trie
>
> You can generate these as read only global arrays and are very 
> fast for this.

Thank your for this hint. I'll have to check whether this is 
applicable for this context. For example this lookup table 
appears to be a bijection.