Redash: Support query alias to refer query by name, not query_xxx

[xhiroga]

Give a name to query make it easy that using queries as components.
This idea is giving query an alias and using it to run queries on query results.

Set query alias.

Use it without query_xxx.

[support[bot]]

:wave: @hiroga-cc, we use the issue tracker exclusively for bug reports and planned work. However, this issue appears to be a support request. Please use our forum to get help.

[arikfr]

@hiroga-cc that's an interesting idea! You should post it in the forum as a feature request. Thanks!