feat(update): detect CivitAI paidAccess versions and add hide paid updates (#1060)

CivitAI's PaidAccess cutover deprecated the availability=EarlyAccess and
earlyAccessEndsAt signals; gated versions now report availability=Public
with a paidAccess DTO that LoRA Manager previously ignored, so "Hide
Early Access Updates" missed paid/early-access models and downloads
failed with 401.

Parse and persist paidAccess from model-level, bulk, and by-hash
responses; treat timed paid gates as early access and permanent paid
versions as a distinct is_paid state; add a hide_paid_updates setting
with a "Paid" badge in the versions tab; warn before downloading gated
versions. Includes SQLite migration, i18n for all locales, and
backend/frontend tests.

static/js/state/index.js

@@ -49,6 +49,7 @@ const DEFAULT_SETTINGS_BASE = Object.freeze({
     priority_tags: { ...DEFAULT_PRIORITY_TAG_CONFIG },
     version_grouping: 'same_base',
     hide_early_access_updates: false,
+    hide_paid_updates: false,
     auto_organize_exclusions: [],
     metadata_refresh_skip_paths: [],
     skip_previously_downloaded_model_versions: false,