Enhancement: include sqlc version in generated files

[zlymeda]

Currently, sqlc adds this comment to generated files:

// Code generated by sqlc. DO NOT EDIT.

It would be nice to include also the sqlc version, something like:

// Code generated by sqlc v1.12.0. DO NOT EDIT.

Why? If a developer is using an older version of sqlc, he/she would notice that before committing:

- // Code generated by sqlc v1.13.0. DO NOT EDIT.
+ // Code generated by sqlc v1.12.0. DO NOT EDIT.
// ...

What do you think?

[kyleconroy]

I don't think I'm going to add this. My main reason is that it will generate unnecessary diffs every time someone updates sqlc.

[kyleconroy]

I looked at the protoc output and realized it includes the version of protoc and the version of any plugins.

// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
//  protoc-gen-go v1.27.1                                                                                                                                                                                              
//  protoc        v3.19.1
// source: python/ast.proto

I'm going to adopt that format for sqlc (using spaces instead of tabs)

// Code generated by sqlc. DO NOT EDIT.
// versions:
//  sqlc v1.12.0
// source: query.sql