[feature request] Adding @babel/template

**Describe the bug**
`babel-template` used to be available on `t` as in:

```
export default function(babel) {
const { types: t } = babel; // t.template was here!
```

But now `@babel/template` is it its own module.

Is there any way for us to be able to import `@babel/template`? It is a really handy feature when rewriting large blocks of code.

**Expected behavior**
Be able to import `@babel/template`

**astexplorer settings:**
- Selected parser: babylon7
- Selected transformer (if applicable): babel7
- Contents of the local storage key `explorerSettingsV1` (code can be removed if you don't want it to be public)

**Additional context**
Much easier to debug making a new template in AST explorer versus a node script!