Add Support For Multiple Languages

[valencik]

Adds support for multiple languages!
Just French and Spanish to start.

We do this using a collection of builders that subtypes of AnalyzerBuilder which is now an abstract class.
There's a common Config data type to enable some sharing of settings as seen in the MultiLingualPipeline example:

val base = AnalyzerBuilder.default.withLowerCasing.withASCIIFolding

val english = base.english.withPorterStemmer.tokenizer[IO]
val french = base.french.withFrenchLightStemmer.tokenizer[IO]
val spanish = base.spanish.withSpanishLightStemmer.tokenizer[IO]

All of english, french, and spanish will apply lowercasing and ascifolding.