Adding custom locations

[MaticDiba]

We want to support adding custom locations with photos. This PR also sets ground for adding custom locaitons in "offline" mode to sync them later.

[Copilot]

Pull request overview

Adds support for creating custom locations with locally stored photos, enabling offline creation and later synchronization when the device comes back online.

Changes:

• Add offline photo capture/gallery picking in the “Add custom location” flow and persist photos locally.
• Implement sync logic for pending custom locations + photo uploads, triggered both on submit and when network comes online.
• Switch API base URL to be environment-driven and wire CI/build workflows to provide API_URL.

Reviewed changes

Copilot reviewed 18 out of 21 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
src/stores/map-store.js	Updates ortho layer capabilities endpoint and layer name.
src/stores/local-custom-location-store.js	Adds local photo persistence, photo upload, sync orchestration, and rollback for failed creates.
src/router/routes.js	Allows custom location details route to resolve by numeric id or offline externalId.
src/pages/CustomLocationSearchPage.vue	Navigates to details using externalId for offline items; shows offline indicator.
src/pages/CustomLocationDetailsPage.vue	Displays local + remote photos, thumbnails, and full-screen viewing.
src/i18n/sl-SI/index.js	Adds new UI strings for photos/offline flow (with one typo).
src/i18n/en-US/index.js	Adds new UI strings for photos/offline flow.
src/helpers/photo-storage.js	New helper for saving/reading/deleting photos on Cordova FS or browser OPFS.
src/helpers/network.js	New helper to track online/offline state and fire “back online” callbacks.
src/db/db.js	Adds DB migration to move files records from data to filePath-based storage.
src/components/custom-locations/AddLocation.vue	Adds camera/gallery UI, previews, submit loading state, and offline-aware create+sync.
src/boot/axios.js	Uses process.env.API_URL (with localhost fallback) for API base URL.
src/App.vue	Initializes network tracking and triggers custom-location sync when coming online.
src-cordova/package.json	Adds Cordova camera/file plugins.
src-cordova/package-lock.json	Updates lockfile, but only includes cordova-plugin-file.
quasar.config.js	Exposes API_URL via Quasar env config.
package.json	Adds build-mobile-prod script and introduces cross-env.
package-lock.json	Adds cross-env and its dependencies.
.gitignore	Ignores local env override files.
.github/workflows/test.yml	Provides API_URL during PR build.
.github/workflows/build.yml	Provides API_URL during main build/deploy.

Files not reviewed (1)

• src-cordova/package-lock.json: Language not supported

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