Add Scala framework/library detection

[andrew]

Companion to #168. knowledge/scala/ covers build/test/lint but no runtime libraries, so a Play or ZIO project reports Scala + sbt and nothing else. All of these would be category = "library" with substring detection in build.sbt / build.mill / build.sc / project/Dependencies.scala.

Web / RPC

• Play (https://github.com/playframework/playframework) — also detect conf/application.conf + conf/routes
• Akka HTTP (https://github.com/akka/akka-http) — "akka-http"
• Pekko / Pekko HTTP (https://github.com/apache/pekko) — "pekko" (Apache fork of Akka post-licence-change)
• http4s (https://github.com/http4s/http4s) — "http4s"
• ZIO HTTP (https://github.com/zio/zio-http) — "zio-http"
• Tapir (https://github.com/softwaremill/tapir) — "tapir"
• Finagle / Finatra (https://github.com/twitter/finagle) — "finagle" / "finatra"

Effect / concurrency

• Akka (https://github.com/akka/akka) — "akka-actor" or "akka-stream"
• Cats Effect (https://github.com/typelevel/cats-effect) — "cats-effect"
• ZIO (https://github.com/zio/zio) — "dev.zio" %% "zio"
• fs2 (https://github.com/typelevel/fs2) — "co.fs2"
• Monix (https://github.com/monix/monix) — "monix"

Data

• Spark (https://github.com/apache/spark) — "spark-core" or "spark-sql"
• Flink (https://github.com/apache/flink) — "flink-streaming" or "flink-scala"
• Kafka Streams (https://github.com/apache/kafka) — "kafka-streams-scala"

Serialization / DB

• Circe (https://github.com/circe/circe) — "circe-core"
• Slick (https://github.com/slick/slick) — "slick"
• Doobie (https://github.com/typelevel/doobie) — "doobie"
• Quill (https://github.com/zio/zio-quill) — "quill"

Also missing from #168 (tooling, different categories)

• weaver-test (https://github.com/typelevel/weaver-test) — category = "test"; "weaver-cats" or "weaver-test"
• ScalaCheck (https://github.com/typelevel/scalacheck) — category = "test"; "scalacheck"
• Bloop (https://github.com/scalacenter/bloop) — category = "build"; detect .bloop/ or .bsp/bloop.json
• Scala Steward (https://github.com/scala-steward-org/scala-steward) — category = "dependency_bot"; detect .scala-steward.conf