[Multi-Database Support] Tracker for multidatabase support, aimed to support h2, postgres

[shoothzj]

• Bump h2 version: Bump h2 version to 2.x, consistent with springboot #4745
• Manually add quote on keywords column or table name [Multi-Database Support] Without Reliance on globally_quoted_identifiers Variable #4749
• Without Reliance on boolean integer compare [Multi-Database Support] Without Reliance on boolean integer compare #4757
• package postgre h2 dependency [Multi-Database Support] package postgre h2 dependency] #4763
• Optimize table case [Multi-Database Support] Optimize table case sensitivity #4768
• Support h2、postgre profile [Multi-Database Support] Introduce h2 postgre profile properties to let user config database config #4766
• Optimize column case [Multi-Database Support] Optimize column define case sensitivity #4776
• Where sql also needs escape [Multi-Database Support][pg] Where clause need escape, otherwise will request postgre use lowwer case #4780
• Still contains directly concat sql [Multi-Database Support][pg] Make JdbcUserDetailsManager compat with postgre #4790
• Run on h2 [Multi-Database Support][h2] Support run on h2 #4851

[stale]

This issue has been automatically marked as stale because it has not had activity in the last 30 days. It will be closed in 7 days unless it is tagged "help wanted" or other activity occurs. Thank you for your contributions.