feat(vagrant): Add support for Vagrant (#1812)

Signed-off-by: Dentrax <furkan.turkal@hotmail.com>
Co-authored-by: Thomas O'Donnell <andytom@users.noreply.github.com>

Co-authored-by: Thomas O'Donnell <andytom@users.noreply.github.com>

docs/config/README.md

@@ -218,6 +218,7 @@ $ruby\
 $rust\
 $swift\
 $terraform\
+$vagrant\
 $zig\
 $nix_shell\
 $conda\
@@ -2496,6 +2497,41 @@ disabled = false
 show_always = true
 ```
 
+## Vagrant
+
+The `vagrant` module shows the currently installed version of Vagrant.
+The module will be shown if any of the following conditions are met:
+
+- The current directory contains a `Vagrantfile` file
+
+### Options
+
+| Option     | Default                            | Description                                         |
+| ---------- | ---------------------------------- | --------------------------------------------------- |
+| `format`   | `"via [$symbol($version )]($style)"` | The format for the module.                          |
+| `symbol`   | `"⍱ "`                             | A format string representing the symbol of Vagrant. |
+| `style`    | `"cyan bold"`                      | The style for the module.                           |
+| `disabled` | `false`                            | Disables the `Vagrant` module.                      |
+
+### Variables
+
+| Variable | Example          | Description                          |
+| -------- | ---------------- | ------------------------------------ |
+| version  | `Vagrant 2.2.10` | The version of `Vagrant`             |
+| 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
+
+[vagrant]
+format = "via [⍱ $version](bold white) "
+```
+
 ## Zig
 
 The `zig` module shows the currently installed version of Zig.