fix(planner): group by without aggr calls

[xxchan]

try to fix #256

current result:

> create table t(id int, v1 int, v2 int, v3 int);
created]
> explain select id from t group by id;
PhysicalProjection: exprs [InputRef #0]
  PhysicalHashAgg: 0 agg calls
    PhysicalTableScan: table #0, columns [0], with_row_handler: false, is_sorted: false, expr: None
> explain select * from t group by id;
thread 'tokio-runtime-worker' panicked at 'column reference not found', src/optimizer/logical_plan_rewriter/input_ref_resolver.rs:30:26
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
thread 'main' panicked at 'failed to join query thread: JoinError::Panic(...)', src/main.rs:79:23

[xxchan]

This is new test. Others are merged from select.test

[skyzh]

LGTM!

> explain select * from t group by id;
thread 'tokio-runtime-worker' panicked at 'column reference not found', src/optimizer/logical_plan_rewriter/input_ref_resolver.rs:30:26
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
thread 'main' panicked at 'failed to join query thread: JoinError::Panic(...)', src/main.rs:79:23

For this panic, we might need to create a new issue for that. Better to reject such query as we didn't apply aggregation functions on columns other than group keys.