Docs Party 2024 (#15876)

Co-authored-by: Raunak Raj <nkray21111983@gmail.com>
Co-authored-by: Thorsten Ball <mrnugget@gmail.com>
Co-authored-by: Bennet <bennet@zed.dev>
Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>
Co-authored-by: Joseph T Lyons <JosephTLyons@gmail.com>
Co-authored-by: Mikayla <mikayla@zed.dev>
Co-authored-by: Jason <jason@zed.dev>
Co-authored-by: Antonio Scandurra <me@as-cii.com>
Co-authored-by: Max Brunsfeld <maxbrunsfeld@gmail.com>
Co-authored-by: Marshall <marshall@zed.dev>
Co-authored-by: Nathan Sobo <nathan@zed.dev>
Co-authored-by: Jason Mancuso <7891333+jvmncs@users.noreply.github.com>
Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>

docs/src/languages/scala.md

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+# Scala
+
+Scala language support in Zed is provided by the community-maintained [Scala extension](https://github.com/scalameta/metals-zed).
+Report issues to: [https://github.com/scalameta/metals-zed/issues](https://github.com/scalameta/metals-zed/issues)
+
+- Tree Sitter: [tree-sitter/tree-sitter-scala](https://github.com/tree-sitter/tree-sitter-scala)
+- Language Server: [scalameta/metals](https://github.com/scalameta/metals)
+
+## Setup
+
+- Install Scala with `cs setup` (Coursier): https://www.scala-lang.org/download/
+  - `brew install coursier/formulas/coursier && cs setup`
+- REPL (Almond) Setup Instructions https://almond.sh/docs/quick-start-install
+  - `brew install --cask temurin` (Eclipse foundation official OpenJDK binaries)
+  - `brew install coursier/formulas/coursier && cs setup`
+  - `coursier launch --use-bootstrap almond -- --install`
+
+## Configuration
+
+Behavior of the Metals language server can be controlled with:
+
+- `.scalafix.conf` file - See [Scalafix Configuration](https://scalacenter.github.io/scalafix/docs/users/configuration.html)
+- `.scalafmt.conf` file - See [Scalafmt Configuration](https://scalameta.org/scalafmt/docs/configuration.html)
+
+You can place these files in the root of your project or specifying their location in the Metals configuration. See [Metals User Configuration](https://scalameta.org/metals/docs/editors/user-configuration) for more.
+
+<!--
+TBD: Provide LSP configuration example for metals in Zed settings.json. metals.{javaHome,excludedPackages,customProjectRoot} etc.
+-->