Add limited Ansible language server support (#1170)

References and definition not working yet. Since ansible resolves same files as yaml LS, we will need to add disambiguation later.

Work in progress, improvements on the language server itself are being worked on, ansible support in Serena will be extended accordingly in the future.

docs/01-about/020_programming-languages.md

@@ -28,6 +28,12 @@ We currently provide direct, out-of-the-box support for the programming language
 Some languages require additional installations or setup steps, as noted.
 
 * **AL**
+* **Ansible**
+  (experimental; requires Node.js and npm; automatically installs `@ansible/ansible-language-server`;
+  must be explicitly specified in the `languages` entry in the `project.yml`; requires `ansible` in PATH for full functionality)
+  the upstream `@ansible/ansible-language-server@1.2.3` supports hover, completion, definition,
+  semantic tokens, and validation; document symbols, workspace symbols, references, and rename
+  are not supported by this version)
 * **Bash**
 * **C#**  
   (by default, uses the Roslyn language server (language `csharp`), requiring [.NET v10+](https://dotnet.microsoft.com/en-us/download/dotnet) and, on Windows, `pwsh` ([PowerShell 7+](https://learn.microsoft.com/en-us/powershell/scripting/install/install-powershell-on-windows?view=powershell-7.5));
@@ -135,4 +141,4 @@ of choice.
 </p>
 ```
 
-See the [JetBrains Plugin documentation](../02-usage/025_jetbrains_plugin) for usage details.
+See the [JetBrains Plugin documentation](../02-usage/025_jetbrains_plugin) for usage details.