Feature: infer_schema support normal file path.

[RinChanNOWWW]

Summary

We can query file by normal file paths or stage, such as:

select * from 'fs:///home/...';
select * from 's3://bucket/...';
select * from @stage;

However, we only can call infer_schema on stage files:

select * from infer_schema(location=>'@stage/...');

select * from infer_schema(location =>'fs:///home/...'); -- this will panic.

We should unify the behavior.

[ljluestc]

-- Use 'SELECT *' as an example query, modify as needed
-- For querying files directly
SELECT * FROM 'fs:///home/...';
SELECT * FROM 's3://bucket/...';

-- For querying from a stage
SELECT * FROM @stage;

-- For inferring schema from stage files
SELECT * FROM infer_schema(location => '@stage/...');

-- To achieve unified behavior, use the same method for both
SELECT * FROM infer_schema(location => 'fs:///home/...'); -- or other locations

[RinChanNOWWW]

SELECT * FROM infer_schema(location => 'fs:///home/...'); -- or other locations

This command would panic when I tried it. Was it fixed?