Supports installation via npm or pnpm, or updates documentation

[linghengqian]

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• No.

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• Supports installation via npm or pnpm, or updates documentation. Currently, it is mentioned in https://github.com/opensearch-project/oui/blob/1.12.0/README.md,

To install the OpenSearch UI Framework into an existing project, use the yarn CLI (npm is not supported).

yarn add @opensearch-project/oui

• To be honest, I haven't seen any issues indicating what happens in https://github.com/npm/cli and https://github.com/pnpm/pnpm . It would be nice to provide more details in the README.md.

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[dblock]

[Catch All Triage - 1, 2, 3, 4]