Tracking: catalog for stage/location special data source

[BohuTANG]

Summary

Some cases make the databend as a query engine from different data sources:

Case 1:

SELECT parse_json($1) FROM @stage/@location

Case 2:

COPY INTO <t1> SELECT parse_json($1) FROM @stage/@location

Before this work is done, these issues will be blocked:

• Support COPY INTO ... (SELECT fields FROM @stage) #7228 (cc @ariesdevil )
• feat: query data from S3 location or stage #7211 (cc @doki23 )
• allow executing COPY INTO in a cluster #6395 (cc @RinChanNOWWW )
• httpapi: return rows affected on DELETE & COPY INTO statements #7323
• Add function to infer schema from files(CSV/Parquet) #6345 (cc @Xuanwo)
• Feature: Rewrite copy into plan into insert plan #7939

[BohuTANG]

cc @sundy-li @zhang2014

[doki23]

I'm thinking of doing it in #7211. But it's great if someone more familiar with meta will take this issue.

[BohuTANG]

I'm thinking of doing it in #7211. But it's great if someone more familiar with meta will take this issue.

Thanks for the syncing, @dantengsky is more familiar with it. He plans to give some details or some work about it.

[dantengsky]

@doki23 @BohuTANG

I am doing some POC works now, hopefully PR will be opened soon... :)