feat(cloning): add template anonymization strategy with {fakerMethod} placeholders

[rokde]

Summary

• Add a new `template` column strategy that expands `{fakerMethod}` placeholders against FakerPHP — e.g. `{userName}@acme.test` or `+49 {numerify}`.
• Validator rejects empty templates and unknown faker method names at config-load time; engine renders unknown placeholders as empty strings as a runtime fallback.
• Wire the new strategy through `ColumnCloningConfigData`, the cloning YAML loader/writer, the PII matcher reader/writer, the `column:edit` command, and `matchers:check` / `matchers:list` display.
• Document the strategy in `docs/cloning-yaml.md`, `specs/PRD-cloning-yaml-schema.md`, and `specs/PRD-pii-matchers.md` with examples.

Test plan

• `composer test` green
• `clonio cloning:column-edit --strategy=template --template='{userName}@acme.test'` round-trips through YAML
• A cloning run with a templated email column produces values like `john_doe@acme.test` (real user-shaped local part, fixed domain)
• Validator errors on `template: ''` and on unknown placeholders like `{notARealMethod}`

🤖 Generated with Claude Code