Explicit error message asking for an updated tslint version

[JoshuaKGoldberg]

🚀 Feature Request

Following #106: if a project has explicitly set their tslint dependency too low, they might still get the unknown option '--print-config' complaint.

Existing Behavior

Output from npx tslint-to-eslint-config:

❌ Could not start tslint-to-eslint: ❌
Command failed: tslint --print-config "./tslint.json"
error: unknown option `--print-config'

Change Proposal

If the error from TSLint is this very specific one, change it to:

❌ Could not start tslint-to-eslint: ❌
TSLint v5.18 required. Please update your version.