Revert "Remove redundant typescript dependencies"

[fregante]

Reverts #226

Nope, they're needed

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ESLint: 8.56.0

ESLint couldn't find the plugin "@typescript-eslint/eslint-plugin".

(The package "@typescript-eslint/eslint-plugin" was not found when loaded as a Node module from the directory "./pixiebrix-extension".)

It's likely that the plugin isn't installed correctly. Try reinstalling by running the following:

    npm install @typescript-eslint/eslint-plugin@latest --save-dev

The plugin "@typescript-eslint/eslint-plugin" was referenced from the config file in ".eslintrc.js » eslint-config-pixiebrix » eslint-config-xo-typescript".

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