Feat/View

[KKould]

What problem does this PR solve?

feat:

• support Create View
• impl View as data source

fix:

• alias is not lower_case
• When NestLoopJoin is in Left Join, the left table will have one more row of data (the right table is null at this time)

Issue link: #188

What is changed and how it works?

Code changes

• Has Rust code change
• Has CI related scripts change

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Note for reviewer