Adds an info comment to translations

[rchowell]

Issue #, if available:

#37

Description of changes:

Adds an info comment at the beginning of translations.

Example

--#[select-10]
SELECT t.c || CURRENT_USER FROM T;


-- PartiQL 0.0 // Scribe @ 0.1.0-15b1754 
SELECT "T"['c'] || CURRENT_USER AS "_1" FROM "default"."T" AS "T"

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[johnedquinn]

Just requesting to remove the accidentally added public API. Beyond that, looks good.

[johnedquinn]

Not needed