test(folio): add commonTest source sets to core and shared

examples/folio/app/shared/build.gradle.kts

@@ -49,6 +49,9 @@ kotlin {
             implementation(libs.lifecycle.viewmodel.compose)
             implementation(libs.navigation.compose)
         }
+        commonTest.dependencies {
+            implementation(kotlin("test"))
+        }
         androidMain.dependencies {
             implementation(libs.androidx.activity.compose)
         }

examples/folio/core/build.gradle.kts

@@ -35,6 +35,10 @@ kotlin {
             api(libs.sqldelight.coroutines.extensions)
             api(libs.sqldelight.async.extensions)
         }
+        commonTest.dependencies {
+            implementation(kotlin("test"))
+            implementation(libs.kotlinx.coroutines.test)
+        }
         androidMain.dependencies {
             implementation(libs.sqldelight.android.driver)
         }

examples/folio/gradle/libs.versions.toml

@@ -14,6 +14,7 @@ sqlite-wasm = "3.53.0-build1"
 
 [libraries]
 kotlinx-coroutines-core = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core", version.ref = "kotlinx-coroutines" }
+kotlinx-coroutines-test = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-test", version.ref = "kotlinx-coroutines" }
 kotlinx-serialization-json = { module = "org.jetbrains.kotlinx:kotlinx-serialization-json", version.ref = "kotlinx-serialization" }
 
 sqldelight-runtime = { module = "app.cash.sqldelight:runtime", version.ref = "sqldelight" }