v0.3.0 — Batch multi-field CDS translations

Added

• TranslateSetTexts per-entry selectors — each texts item may now carry its own field_name/position, overriding the top-level selectors for that entry. All fields of one data_definition/metadata_extension (e.g. every ui_lineitem_label across fields) can be written in a single call.
• The ABAP handler groups entries by field and writes each group under one transport change scenario, so the object is enqueued/locked only once per request instead of once per field — fixing the lock collisions seen when translating field-by-field.

Both handler variants (zcl_i18n_service on-prem and zcl_i18n_service_cloud) are updated. Backward compatible: entries without their own field_name/position fall back to the top-level selectors.

Full changelog: v0.2.0...v0.3.0