Rokit errors when the same tool name under a different author exists, and only one is installed

[filiptibell]

Consider the following situation:

1. User has added lune-org/lune@version in a global manifest
2. User has added filiptibell/lune@version in a project-specific manifest
3. Only lune from the global manifest is installed by the user
4. Try to run lune in the project-specific manifest

Rokit will now be managing lune and only has the version from lune-org installed - meaning that when a user tries to run it under the project, and it refers to a tool from a different author, it will fail to run. This is caused by the Rokit runner not automatically prompting for and installing the new tool when necessary:

rokit/src/runner/mod.rs

Line 48 in ca201e4

// TODO: Prompt for trust and install tool if not already installed

Implementing the promt-trust-and-install mechanism here in the runner will fix the issue.