Add pyright workspace configuration (#14265)

Release Notes:

- Added support for pyright workspace configuration, as described in
https://microsoft.github.io/pyright/#/settings .

docs/src/languages/python.md

@@ -11,6 +11,35 @@ The [pyright](https://github.com/microsoft/pyright) language server offers flexi
 
 For more information, see the Pyright [configuration documentation](https://microsoft.github.io/pyright/#/configuration).
 
+### Settings
+
+The [pyright](https://github.com/microsoft/pyright) language server also accepts specific LSP related settings, not necessarily connected to a project. These can be changed in the `lsp` section of your `settings.json`.
+
+For example, in order to:
+- use strict type-checking level
+- diagnose all files in the workspace instead of the only open files default
+- provide the path to a specific python interpreter
+
+```json
+{
+  "lsp": {
+    "pyright": {
+      "settings": {
+        "python.analysis": {
+          "diagnosticMode": "workspace",
+          "typeCheckingMode": "strict"
+        },
+        "python": {
+          "pythonPath": ".venv/bin/python"
+        }
+      }
+    }
+  }
+}
+```
+
+For more information, see the Pyright [settings documentation](https://microsoft.github.io/pyright/#/settings).
+
 ### Virtual environments
 
 A python [virtual environment](https://docs.python.org/3/tutorial/venv.html) allows you to store all of a project's dependencies, including the Python interpreter and package manager, in a single directory that's isolated from any other Python projects on your computer.
@@ -48,6 +77,22 @@ venvPath = "."
 venv = ".venv"
 ```
 
+You can also configure this option directly in your `settings.json` file ([pyrights settings](#settings)), as recommended in [Configuring Your Python Environment](https://microsoft.github.io/pyright/#/import-resolution?id=configuring-your-python-environment).
+
+```json
+{
+  "lsp": {
+    "pyright": {
+      "settings": {
+        "python": {
+          "pythonPath": ".venv/bin/python"
+        }
+      }
+    }
+  }
+}
+```
+
 ### Code formatting
 
 The Pyright language server does not provide code formatting. If you want to automatically reformat your Python code when saving, you'll need to specify an \_external_code formatter in your settings. See the [configuration](../configuring-zed.md) documentation for more information.