Make sync configurable

[frankhinek]

Sync should be configurable and this feature was requested by multiple community members (example below).

[mistermoe]

initial semi-delirious thoughts:

const { web5, did } = await Web5.connect({
  techPreview: {
    sync: '5m' | true | false
  }
});

• value provided for sync can be a boolean or a string.
• if string, value is parsed by https://www.npmjs.com/package/ms.
• if false, toggles sync off entirely
• if true, toggles sync on with default interval of 1m (totally down for default to be longer)
• defaults to true
• the reason i put the option in techPreview is because i think configuring sync's interval is actually an agent configuration that wouldn't be controlled by web5. imagine alice using multiple web5 apps that are all constantly clobbering s single sync interval for some remote agent
• def lmk if allowing for boolean + hipster string time format feels too "cute".

[mistermoe]

another relevant discord discussion starts here