Feature: check endpoint_url valid before detect_region

[wubx]

Summary startup databend error

Databend Query start failure, cause: StorageOther. Code: 4000, Text = other error (ConfigInvalid (permanent) at Builder::build, context: { service: s3 } => region is missing. Please find it by S3::detect_region() or set them in env.).

Actual user endpoint_url lost http:// or https:// just

endpoint_url='127.0.0.1:9900'

[wubx]

cc @Xuanwo

[Xuanwo]

Should be added in https://github.com/datafuselabs/databend/pull/13550