feat(scala): Add scala module (#2409)

* Add support for scala ( w/o sbt )

* Add scala description

* Change scala color to bold red

* update scala extensions in README

* failed lint

* cr changes ( regex, simplify parsing, imports )

* Scala readme punctuation

Co-authored-by: David Knaack <davidkna@users.noreply.github.com>

Co-authored-by: David Knaack <davidkna@users.noreply.github.com>

docs/config/README.md

@@ -216,6 +216,7 @@ $purescript\
 $python\
 $ruby\
 $rust\
+$scala\
 $swift\
 $terraform\
 $vagrant\
@@ -2272,6 +2273,49 @@ The module will be shown if any of the following conditions are met:
 format = "via [⚙️ $version](red bold)"
 ```
 
+
+## Scala
+
+The `scala` module shows the currently installed version of Scala.
+By default the module will be shown if any of the following conditions are met:
+
+- The current directory contains a `build.sbt`, `.scalaenv` or `.sbtenv` file
+- The current directory contains a file with the `.scala` or `.sbt` extension
+- The current directory contains a directory named `.metals`
+
+### Options
+
+
+| Option              | Default                                    | Description                                      |
+| ------------------- | -------------------------------------------| -----------------------------------------------  |
+| `format`            | `"via [${symbol}(${version} )]($style)"`   | The format for the module.                       |
+| `detect_extensions` | `["sbt", "scala"]`                         | Which extensions should trigger this module.     |
+| `detect_files`      | `[".scalaenv", ".sbtenv", "build.sbt"]`    | Which filenames should trigger this module.      |
+| `detect_folders`    | `[".metals"]`                              | Which folders should trigger this modules.       |
+| `symbol`            | `"🆂 "`                                    | A format string representing the symbol of Scala.   |
+| `style`             | `"red dimmed"`                             | The style for the module.                        |
+| `disabled`          | `false`                                    | Disables the `scala` module.                     |
+
+### Variables
+
+| Variable | Example    | Description                          |
+| -------- | -----------| ------------------------------------ |
+| version  | `2.13.5`   | The version of `scala`               |
+| symbol   |            | Mirrors the value of option `symbol` |
+| style\*  |            | Mirrors the value of option `style`  |
+
+\*: This variable can only be used as a part of a style string
+
+### Example
+
+```toml
+# ~/.config/starship.toml
+
+[scala]
+symbol = "🌟 "
+```
+
+
 ## Shell
 
 The `shell` module shows an indicator for currently used shell.

docs/presets/README.md

@@ -86,6 +86,9 @@ symbol = " "
 [rust]
 symbol = " "
 
+[scala]
+symbol = " "
+
 [swift]
 symbol = "ﯣ "
 ```