chore(folio): add Metro DI plugin (1.0.0-RC4) to versions catalog

Adds dev.zacsweers.metro plugin alias and applies it to :core
as a smoke test. Compiler-plugin only, no KSP required.

examples/folio/build.gradle.kts

@@ -7,4 +7,5 @@ plugins {
     alias(libs.plugins.kotlin.plugin.serialization) apply false
     alias(libs.plugins.compose.multiplatform) apply false
     alias(libs.plugins.sqldelight) apply false
+    alias(libs.plugins.metro) apply false
 }

examples/folio/core/build.gradle.kts

@@ -6,6 +6,7 @@ plugins {
     alias(libs.plugins.kotlin.multiplatform)
     alias(libs.plugins.android.library)
     alias(libs.plugins.sqldelight)
+    alias(libs.plugins.metro)
 }
 
 kotlin {

examples/folio/gradle/libs.versions.toml

@@ -7,6 +7,7 @@ kotlinx-coroutines = "1.10.2"
 kotlinx-serialization = "1.9.0"
 lifecycle-viewmodel-compose = "2.10.0"
 activity-compose = "1.13.0"
+metro = "1.0.0-RC4"
 
 [libraries]
 kotlinx-coroutines-core = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core", version.ref = "kotlinx-coroutines" }
@@ -32,3 +33,4 @@ kotlin-plugin-compose = { id = "org.jetbrains.kotlin.plugin.compose", version.re
 kotlin-plugin-serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin" }
 compose-multiplatform = { id = "org.jetbrains.compose", version.ref = "compose-multiplatform" }
 sqldelight = { id = "app.cash.sqldelight", version.ref = "sqldelight" }
+metro = { id = "dev.zacsweers.metro", version.ref = "metro" }