VTL - Analytic operators

Name	Symbol	InMemory	WebAssembly
Analytic invocation		❌	❌
First value	first_value	✔️	❌
Last value	last_value	✔️	❌
Lag	lag	❌	❌
lead	lead	❌	❌
Rank	rank	❌	❌
Ratio to report	ratio_to_report	❌	❌