Add documentation and lookups for values

[hschimke]

          looks great. tried to play with it and was going great. I do think you will need to eventually create a table that maps between properties and thier type ( and maybe even a column of an example value at the so it will be explicit) .

one last this is that with TryHarder true nad UpcEanExtension - I managed to make the browser totally freeze while trying to scan this particular image. I will be more than happy if you could have a look why would that be .

Originally posted by @VerioN1 in https://github.com/hschimke/rxing-wasm/issues/1#issuecomment-1411209115

[hschimke]

Partially resolved with: 504a0e1b5b212231bf22fffeb767a74f985b398f