Add SDK map module and migrate map fetching to Apollo with Hilt wiring.

This includes the new sdk module, MapService + mapper implementation, Apollo provider module, Hilt app integration, and the project .gitignore update.

Made-with: Cursor

.cursor/rules/app-recreation-core.mdc

@@ -16,6 +16,11 @@ alwaysApply: true
 - When referencing legacy implementation details, copy behavior intentionally into the new project rather than editing old files.
 - If a task appears to require modifying the old project, stop and propose an equivalent change in `airmq-android-2026` instead.
 
+## Naming convention
+
+- Use `AirMQ` everywhere for product naming.
+- Never use mixed-case variants in text, docs, comments, identifiers, filenames, or symbols.
+
 ## Baseline architecture and platform stack
 
 Use this stack as the default foundation for all implementation work in `airmq-android-2026`:
@@ -23,7 +28,7 @@ Use this stack as the default foundation for all implementation work in `airmq-a
 1. Jetpack Compose for UI.
 2. Compose Navigation 3 as the in-app navigation system.
 3. Firebase for mobile backend capabilities (for example auth, analytics, crash reporting, messaging, or remote config as needed).
-4. Google Maps platform for map rendering and map-related interactions.
+4. OpenStreetMap platform for map rendering and map-related interactions.
 5. Apollo GraphQL for GraphQL schema integration, client generation, and network operations.
 
 If a requested change conflicts with this baseline, ask for explicit approval before introducing an alternative.