feat: initialize Android project structure with Gradle and basic UI/data architecture

app/src/main/java/com/example/esp32aldldashboard/data/DataRepository.kt

@@ -0,0 +1,12 @@
+package com.example.esp32aldldashboard.data
+
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.flow
+
+interface DataRepository {
+  val data: Flow<List<String>>
+}
+
+class DefaultDataRepository : DataRepository {
+  override val data: Flow<List<String>> = flow { emit(listOf("Android")) }
+}