Ingore shebang at top of file in datafusion-cli

[PsiACE]

Which issue does this PR close?

Closes #11880 .

Rationale for this change

What changes are included in this PR?

to support traditional #! ... shebangs

#!/usr/bin/env -S datafusion-cli -f
SELECT 1;

or we can use something like

--() { :; }; exec datafusion-cli -f "$0"
SELECT 1;

Are these changes tested?

Are there any user-facing changes?

[alamb]

Thank you @PsiACE !

I tested this manually

Before this PR:

andrewlamb@Andrews-MBP-2:~/Software/datafusion/datafusion-cli$ datafusion-cli  -f /tmp/foo.sql
DataFusion CLI v40.0.0
SQL error: ParserError("Expected: an SQL statement, found: #!")

With this PR:

andrewlamb@Andrews-MBP-2:~/Software/datafusion/datafusion-cli$ cargo run -- -f /tmp/foo.sql
...
DataFusion CLI v41.0.0
+----------+
| Int64(1) |
+----------+
| 1        |
+----------+
1 row(s) fetched.
Elapsed 0.008 seconds.

[PsiACE]

I tested this manually

I'm glad to see you confirmed it works manually. I hadn't thought about supporting #! , but I use fish as my default shell and something like --() wasn't generic enough.

[alamb]

Thanks again @PsiACE