Introduce OLAP stack for MAU measurement using Kafka and StarRocks

[hackerwins]

Description:

To achieve the goal of acquiring 5 million MAU for Yorkie Project, it is crucial to implement a mechanism for measuring MAU. I propose to introduce an OLAP stack consisting of Kafka and StarRocks to facilitate this measurement.

• OLAP Stack Test: https://codepair.yorkie.dev/hackerwins/678f5cb7bfe48ae5ecd14ea2/share?token=d0k0k

Additionally, the current server architecture will need to be augmented with events, stats, messagebroker and warehouse package.

• events: Handle event generation and processing
• stats: Handle statistical calculations and aggregations
• messagebroker: Handle Kafka integration
• warehouse: Manage StarRocks data storage and queries

Importantly, when a Client is created, it should be able to receive a UserID through metadata. To address security concerns regarding the direct storage of UserIDs in the database, it is recommended that a hashed version of the UserID be stored instead.

const client = new yorkie.Client('https://api.yorkie.dev', {
  apiKey: 'xxxxxxxxxxxxxxxxxxxx', // Identifying Project
  userID: 'hackerwins',           // Identifying User
});

Why: