Add team tools to orgs toolset

[Copilot]

The get_teams and get_team_members tools were only accessible through the context toolset, making them difficult to discover when working with organizations.

Changes

• Toolset registration: Added GetTeams and GetTeamMembers to the orgs toolset alongside existing SearchOrgs
• Documentation: Auto-generated README now lists both tools under Organizations section
• Backward compatibility: Tools remain in context toolset

Users can now access team-related functionality through either:

--toolsets=orgs        # for organization-focused workflows
--toolsets=context     # for user context (existing behavior)

The tools themselves are unchanged; this only improves their discoverability by making them available through the organization-related toolset.

Original prompt

Add the option to list team members of an org team

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[Copilot]

Pull Request Overview

This PR adds two new team-related tools to the GitHub Organizations toolset: GetTeams and GetTeamMembers. These tools enable retrieving team information for authenticated users and listing team members for specific organization teams. The PR also cleans up an unused dependency reference for go-github/v74.

• Added GetTeams and GetTeamMembers tools to the Organizations toolset
• Added the same tools to the Context toolset
• Updated documentation to describe the new tools
• Removed unused go-github/v74 dependency entry from go.sum

Reviewed Changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
pkg/github/tools.go	Added GetTeams and GetTeamMembers tools to both the orgs and contextTools toolsets
go.sum	Removed unused github.com/google/go-github/v74 dependency entries
README.md	Added documentation for the two new tools in the Organizations section

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[Copilot]

The documentation for get_teams is incomplete and inconsistent with the actual tool description. Based on the code in context_tools.go, this tool retrieves teams that the user is a member of, limited to organizations accessible with current credentials. The documentation should clarify this behavior and mention the organization-scoped nature of the results.

Suggested change

	- **get_teams** - Get teams
	- **get_teams** - Get teams that the user is a member of, limited to organizations accessible with current credentials. Results are organization-scoped.

[steffen]

I was looking for the capability to get team members and was looking in the orgs toolset and couldn't find it.
Only through this pull request I found out it's in the context toolset.

Not sure if we want to have two tools in two different toolsets or even move it to the other toolset. (Not sure if this would break anything.)
Feel free to close this pull request if you think if should leave it as is.