feat: Open Policy Agent module (#1740) (#4441)

* feat: Open Policy Agent module (#1740)

* Format documentation

* Fix typo, `ropa` -> `rego`

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

* Update presets for OPA module

* Add extra space to OPA module symbol

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

docs/.vuepress/public/presets/toml/bracketed-segments.toml

@@ -100,6 +100,9 @@ format = '\[[$symbol($version)]($style)\]'
 [ocaml]
 format = '\[[$symbol($version)(\($switch_indicator$switch_name\))]($style)\]'
 
+[opa]
+format = '\[[$symbol($version)]($style)\]'
+
 [openstack]
 format = '\[[$symbol$cloud(\($project\))]($style)\]'
 

docs/.vuepress/public/presets/toml/no-runtime-versions.toml

@@ -61,6 +61,9 @@ format = 'via [$symbol]($style)'
 [ocaml]
 format = 'via [$symbol(\($switch_indicator$switch_name\) )]($style)'
 
+[opa]
+format = 'via [$symbol]($style)'
+
 [perl]
 format = 'via [$symbol]($style)'
 

docs/.vuepress/public/presets/toml/plain-text-symbols.toml

@@ -97,6 +97,9 @@ symbol = "nix "
 [ocaml]
 symbol = "ml "
 
+[opa]
+symbol = "opa "
+
 [package]
 symbol = "pkg "
 

docs/config/README.md

@@ -259,6 +259,7 @@ $lua\
 $nim\
 $nodejs\
 $ocaml\
+$opa\
 $perl\
 $php\
 $pulumi\
@@ -2635,6 +2636,43 @@ By default the module will be shown if any of the following conditions are met:
 format = "via [🐪 $version]($style) "
 ```
 
+## Open Policy Agent
+
+The `opa` module shows the currently installed version of the OPA tool.
+By default the module will be shown if the current directory contains a `.rego` file.
+
+### Options
+
+| Option              | Default                              | Description                                                               |
+| ------------------- | ------------------------------------ | ------------------------------------------------------------------------- |
+| `format`            | `"via [$symbol($version )]($style)"` | The format for the module.                                                |
+| `version_format`    | `"v${raw}"`                          | The version format. Available vars are `raw`, `major`, `minor`, & `patch` |
+| `symbol`            | `"🪖  "`                              | A format string representing the symbol of OPA.                           |
+| `detect_extensions` | `["rego"]`                           | Which extensions should trigger this module.                              |
+| `detect_files`      | `[]`                                 | Which filenames should trigger this module.                               |
+| `detect_folders`    | `[]`                                 | Which folders should trigger this module.                                 |
+| `style`             | `"bold blue"`                        | The style for the module.                                                 |
+| `disabled`          | `false`                              | Disables the `opa` module.                                                |
+
+### Variables
+
+| Variable | Example   | Description                          |
+| -------- | --------- | ------------------------------------ |
+| version  | `v0.44.0` | The version of `opa`                 |
+| 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
+
+[opa]
+format = "via [⛑️  $version](bold red) "
+```
+
 ## OpenStack
 
 The `openstack` module shows the current OpenStack cloud and project. The module