[DOC] Update Readme

[ChanHHOO]

Background

Current Readmd.md file is not updated to latest version.
And I should write a 3 questions.

Detail

Architecture of Readme.md

1. Overview
   1-1. Overview
   1-2. Dependencies
   1-3. How to run

2. Description of project architecture

3. Major decisions
   3-0. File read
   3-1. Layered Architecture
   3-2. Fallback processing
   3-3. Batch Insert Optimization
   3-4. Timezone handling (AEST -> UTC)

4. How to use AI in this project.

[ChanHHOO]

[FEAT] Update docs #27