Enable common datasource support for Azblob, Oss, and Gcs storage

[fengjiachun]

          @fengjiachun 

just check the code and do the tests,
about copy parquet part for now its only support s3 and fs

greptimedb/src/common/datasource/src/object_store.rs

Lines 56 to 75 in 9860bca

	pub fn build_backend(url: &str, connection: &HashMap<String, String>) -> Result<ObjectStore> {
	let (schema, host, path) = parse_url(url)?;
	let (root, _) = find_dir_and_filename(&path);
	match schema.to_uppercase().as_str() {
	S3_SCHEMA => {
	let host = host.context(error::EmptyHostPathSnafu {
	url: url.to_string(),
	})?;
	Ok(build_s3_backend(&host, &root, connection)?)
	}
	FS_SCHEMA => Ok(build_fs_backend(&root)?),
	_ => error::UnsupportedBackendProtocolSnafu {
	protocol: schema,
	url,
	}
	.fail(),
	}
	}

So I think just support s3 is OK and maybe support others in the future

Originally posted by @yihong0618 in #5585 (comment)

Currently, both copy from/to table/database and external table utilize build_backend to create object storage, but only S3 is supported at this time. We need to extend support to other types of object storage.

[zqr10159]

I would like to complete the section on oss, please assign it to me, thanks!