v0.2.x: Support data source--SQLite3 database

[Breeze0806]

We are recruiting partners to join us in developing our project. Here, you can gain:

1. A team of like-minded partners;
2. Experience in using data warehouse ETL frameworks;
3. Experience in applying the Go programming language.

Currently, among the commonly used relational databases in the market, only SQLite3 is unsupported. The author lacks practical experience in this area. Whether you have time for development, are willing to provide testing, have experience in using SQLite3, or have experience in the Go language, please join us!

[Breeze0806]

I add a branch called sqlite3, please coding base on it.