Deprecate the old connector package names on npm

[suleimansh]

Follow-up to the rename (#144, PR #163). The three connector packages were renamed under the mcp- family and the new names are published (@gemstack/mcp-connectors@0.2.0 + the two connectors). The old names remain orphaned on npm at 0.1.0.

Deprecate them so anyone still on the old names is pointed over (needs npm auth — a maintainer runs these):

npm deprecate @gemstack/connectors "renamed to @gemstack/mcp-connectors"
npm deprecate @gemstack/connector-github "renamed to @gemstack/mcp-connector-github"
npm deprecate @gemstack/connector-google-drive "renamed to @gemstack/mcp-connector-google-drive"

Close once all three are deprecated.

[suleimansh]

Done. Deprecated all three old names on npm (pinned to @0.1.0):

• @gemstack/connectors -> @gemstack/mcp-connectors
• @gemstack/connector-github -> @gemstack/mcp-connector-github
• @gemstack/connector-google-drive -> @gemstack/mcp-connector-google-drive