missing @babel/types (fix: #5625, #6891, #8917)

[mcenkar]

fixes: #5625, #6891, #8917

Moved @babel/types from dev dependencies to normal dependencies. In this case npm will correctly resolve dependency under configurations described in related issues.

Reproduction of issue in: #8917

[sodatea]

As mentioned in #6891 (comment), this is by design.
It was moved in a42a14d

This is because @babel/types is a big dependency that most users do not need, unless they are developing something that needs to be type-checked against these AST types.
In that sense, @babel/types should be a direct dev dependency for that kind of projects. It doesn't have to be consumed indirectly from the vue package.

By the way, we recommend and expect most users to turn on skipLibCheck by default. See the reasoning at vuejs/vue-cli#5688