Improve import type specifier style

[arsnl]

Currently, the import type is top level. This syntax is not optimal since it reduce the readability, locality and make refactoring a little bit more complex.

import { Foo } from "FooLib";
import { Bar } from "BarLib";
import type { FooType } from "FooLib"; // Top level type import

To improve this, TypeScript 4.5 introduce the inline type import.

import { Foo, type FooType } from "FooLib"; // Inline type import
import { Bar } from "BarLib";

To support this new syntax, Peppy will need to:

• Support only TypeScript 4.5 and higher
• Enforce the import/consistent-type-specifier-style rule to ["error", "prefer-inline"]
• Change or replace the import sorting plugin/rules to make sure that Package and Type import are not splitted anymore (see: https://github.com/arsnl/peppy/blob/4a45c486627add0858d555ad1fa0b0ff4bb73bd5/packages/eslint-config-peppy/configs/base.js#L646C1-L668C7)
• Idealy, sort the types in the inline type import at the end

  ✅ import { Foo, Kox, type FooType, type KoxType } from "FooLib";
  🚫 import { Foo, type FooType, Kox, type KoxType } from "FooLib";