Error when Scaffolding types on old scaffolded blockchains

[lumtis]

New scaffolded blockchains have an inconsistency, the type/genesis.go template used to have (v0.14.0):

// this line is used by starport scaffolding # genesis/types/import

And it has been changed to:

import (
// this line is used by starport scaffolding # genesis/types/import
)

Scaffolding type replace it with "fmt", the package needed and if the the first template is used then the code is:

"fmt"

which trigger an error. It can be easily fixed by adding:

import "fmt"

Though, this is annoying for the user.

A fix could be, when scaffolding a type, to verify if:

import (
// this line is used by starport scaffolding # genesis/types/import

exists in the file.

If not we replace:

// this line is used by starport scaffolding # genesis/types/import

With

import (
// this line is used by starport scaffolding # genesis/types/import
)