Add a locator to search for environments in workspace file directory

[karrtikr]

It is defined as:

path.dirname(this.workspaceService.workspaceFile)

Suppose the workspace file is path/to/dir/example.code-workspace, workspace file directory is the path/to/dir directory. Locator can be added here:

vscode-python/src/client/pythonEnvironments/index.ts

Line 185 in 2442dfb

(root: vscode.Uri) => [new WorkspaceVirtualEnvironmentLocator(root.fsPath), new PoetryLocator(root.fsPath)],

cc/ @karthiknadig

[karthiknadig]

Environments search is handled in the new environment manager extension. This can be closed.