Basic chores to improve and clean up

[a-akimov]

Motivation and Context

1. Added .idea to gitignore to support those working in JetBrains IDEs
2. Created an ANTHROPIC_MODEL constant in clients to avoid updating a model in 2 places
3. Added a package description to the Python MCP client
4. Upgraded many package versions, especially the MCP ones

How Has This Been Tested?

Tested locally all variations - servers in Claude and also in clients in this repo.

Breaking Changes

No.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have added or updated documentation as needed

Additional context

No

[jonathanhefner]

• Added .idea to gitignore to support those working in JetBrains IDEs
• Created an ANTHROPIC_MODEL constant in clients to avoid updating a model in 2 places
• Added a package description to the Python MCP client
• Upgraded many package versions, especially the MCP ones

I think these are good changes, but I would say split them into separate PRs, or at least separate commits in the same PR. Even though the changes aren't likely to cause issues, it is helpful to be able to reference, bisect, and/or revert individual commits.