### Description

Hi,
It would be great if you could add the Persian (Farsi) language to the list of supported stemmers.
The Lucene project has a stemmer for Persian as of May 2022 that you can use.
https://github.com/apache/lucene/tree/main/lucene/analysis/common/src/java/org/apache/lucene/analysis/fa
modules/analysis-common/src/main/java/org/elasticsearch/analysis/common/StemmerTokenFilterFactory.java
import org.apache.lucene.analysis.de.GermanMinimalStemFilter;
import org.apache.lucene.analysis.el.GreekStemFilter;
import org.apache.lucene.analysis.en.EnglishMinimalStemFilter;
import org.apache.lucene.analysis.en.EnglishPossessiveFilter;
import org.apache.lucene.analysis.en.KStemFilter;
import org.apache.lucene.analysis.en.PorterStemFilter;
import org.apache.lucene.analysis.es.SpanishLightStemFilter;
import org.apache.lucene.analysis.fi.FinnishLightStemFilter;
import org.apache.lucene.analysis.fr.FrenchLightStemFilter;
import org.apache.lucene.analysis.fr.FrenchMinimalStemFilter;
import org.apache.lucene.analysis.gl.GalicianMinimalStemFilter;
import org.apache.lucene.analysis.gl.GalicianStemFilter;
import org.apache.lucene.analysis.hi.HindiStemFilter;
import org.apache.lucene.analysis.hu.HungarianLightStemFilter;
import org.apache.lucene.analysis.id.IndonesianStemFilter;
import org.apache.lucene.analysis.it.ItalianLightStemFilter;
import org.apache.lucene.analysis.lv.LatvianStemFilter;
import org.apache.lucene.analysis.miscellaneous.EmptyTokenStream;
import org.apache.lucene.analysis.no.NorwegianLightStemFilter;
import org.apache.lucene.analysis.no.NorwegianLightStemmer;
import org.apache.lucene.analysis.no.NorwegianMinimalStemFilter;
import org.apache.lucene.analysis.pt.PortugueseLightStemFilter;
import org.apache.lucene.analysis.pt.PortugueseMinimalStemFilter;
import org.apache.lucene.analysis.pt.PortugueseStemFilter;
import org.apache.lucene.analysis.ru.RussianLightStemFilter;
import org.apache.lucene.analysis.snowball.SnowballFilter;
import org.apache.lucene.analysis.sv.SwedishLightStemFilter;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.env.Environment;