fix: add missing events dep to fix browser bundlers

[achingbrain]

Bundlers do not include node core modules any more so we need to
depend on polyfills in order for downstream consumers to build their
apps successfully.

Fixes #2110

Change checklist

• I have performed a self-review of my own code
• I have made corresponding changes to the documentation if necessary (this includes comments as well)
• I have added tests that prove my fix is effective or that my feature works

[wemeetagain]

I would like to see js-libp2p not require a bundler at all in order to consume in the browser. Related to our portability initiative.

I think that js-libp2p core should be as portable as possible, and that means using isomorphic, or at least portable code throughout.

Also this case, specifically, feels a bit silly. We're requiring browser consumers to bundle an events polyfill for a nodejs-specific feature (using setMaxListeners to avoid a warning) with no benefit to the browser consumer.

[maschad]

I would like to see js-libp2p not require a bundler at all in order to consume in the browser. Related to our portability initiative.

I think that js-libp2p core should be as portable as possible, and that means using isomorphic, or at least portable code throughout.

Also this case, specifically, feels a bit silly. We're requiring browser consumers to bundle an events polyfill for a nodejs-specific feature (using setMaxListeners to avoid a warning) with no benefit to the browser consumer.

I moved this over to a discussion