Find a way to get the guild's member count

[todo]

statistics-collector/src/index.js

Lines 98 to 103 in 3272231

	// TODO: Find a way to get the guild's member count
	case 'GUILD_MEMBER_ADD':
	case 'GUILD_MEMBER_REMOVE':
	writeBotEvent(packet.t, {
	guild_id: packet.d.guild_id,
	user_id: packet.d.user.id

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This issue was generated by todo based on a TODO comment in 3272231. It's been assigned to @pedrofracassi because they committed the code.