fix: Add TypeScript as peer dependency

[mrmckeb]

The rule no-unlocalized-strings requires TypeScript to be installed alongside this plugin, but it isn't listed as either a dependency or a peerDependency of this project:

eslint-plugin/src/rules/no-unlocalized-strings.ts

Line 21 in fe93dc6

import { TypeFlags, UnionType, Type, Expression } from 'typescript'

This is OK for most setups, but stricter package manager setups won't require this to be defined (i.e. pnpm's enableGlobalVirtualStore).

In the meantime, a workaround is available for anyone affected users:

# pnpm-workspace.yaml

enableGlobalVirtualStore: true: false

packageExtensions:
  eslint-plugin-lingui:
    peerDependencies:
      typescript: "*"

[andrii-bodnar]

Related to: #98