Allow to use Jedi language server in system environment or virtual environments #25722
Description
related to davidhalter/jedi#2084 and #25697
As this extension uses an internal Jedi LSP, it is hard for the users to change the jedi setting to adapt various requirements. And in some cases, the user require a specific version of the Jedi, which is hard to change as it is embedded.
Add a new configuration property to allow the users to use Jedi LSP in their system environment or virtual environments, and auto fallback to the internal version if the external version is not found.