chore: update readme with the new tool and resources

[himanshusinghs]

Proposed changes

Adds the newly added tool and resources to Readme file.

Checklist

• I have signed the MongoDB CLA

[Copilot]

Pull Request Overview

Updates the README documentation and tool descriptions to reflect recent changes to the MongoDB MCP server, including a new export tool and resources section.

• Updated export tool description for clarity
• Added new "Supported Resources" section to README
• Improved debug resource description

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
README.md	Added new export tool and resources documentation section
src/tools/mongodb/read/export.ts	Updated export tool description to be more precise
tests/integration/tools/mongodb/read/export.test.ts	Updated test to match new export tool description
src/resources/common/debug.ts	Improved debug resource description clarity

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[blva]

LGTM

[coveralls]

Pull Request Test Coverage Report for Build 17155288437

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 2 of 2 (100.0%) changed or added relevant lines in 2 files are covered.
• 97 unchanged lines in 8 files lost coverage.
• Overall coverage decreased (-0.03%) to 82.014%

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Files with Coverage Reduction	New Missed Lines	%
src/helpers/connectionOptions.ts	4	83.33%
src/transports/base.ts	5	83.82%
src/index.ts	8	0.85%
src/telemetry/telemetry.ts	10	89.07%
src/common/logger.ts	12	89.22%
src/server.ts	18	79.64%
src/common/connectionManager.ts	19	90.56%
src/common/session.ts	21	79.31%

Totals
Change from base Build 17154504920:	-0.03%
Covered Lines:	4357
Relevant Lines:	5280

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💛 - Coveralls