Element Call ringing notifications (#2978)

- Add `ActiveCallManager` to handle incoming and ongoing calls.
- Add ringing call notifications with full screen intents and missed call ones as part of the 'conversation' notifications.

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Co-authored-by: ElementBot <benoitm+elementbot@element.io>

features/call/impl/build.gradle.kts

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2024 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+plugins {
+    id("io.element.android-compose-library")
+    alias(libs.plugins.anvil)
+    alias(libs.plugins.ksp)
+    id("kotlin-parcelize")
+    alias(libs.plugins.kotlin.serialization)
+}
+
+android {
+    namespace = "io.element.android.features.call.impl"
+
+    buildFeatures {
+        buildConfig = true
+    }
+
+    testOptions {
+        unitTests.isIncludeAndroidResources = true
+    }
+}
+
+anvil {
+    generateDaggerFactories.set(true)
+}
+
+dependencies {
+    implementation(projects.appconfig)
+    implementation(projects.anvilannotations)
+    implementation(projects.libraries.architecture)
+    implementation(projects.libraries.core)
+    implementation(projects.libraries.designsystem)
+    implementation(projects.libraries.matrix.impl)
+    implementation(projects.libraries.matrixui)
+    implementation(projects.libraries.network)
+    implementation(projects.libraries.preferences.api)
+    implementation(projects.libraries.push.api)
+    implementation(projects.libraries.uiStrings)
+    implementation(projects.services.analytics.api)
+    implementation(projects.services.toolbox.api)
+    implementation(libs.androidx.webkit)
+    implementation(libs.coil.compose)
+    implementation(libs.serialization.json)
+    api(projects.features.call.api)
+    ksp(libs.showkase.processor)
+
+    testImplementation(libs.coroutines.test)
+    testImplementation(libs.molecule.runtime)
+    testImplementation(libs.test.truth)
+    testImplementation(libs.test.turbine)
+    testImplementation(libs.test.robolectric)
+    testImplementation(libs.test.mockk)
+    testImplementation(projects.features.call.test)
+    testImplementation(projects.libraries.featureflag.test)
+    testImplementation(projects.libraries.preferences.test)
+    testImplementation(projects.libraries.matrix.test)
+    testImplementation(projects.libraries.push.test)
+    testImplementation(projects.services.analytics.test)
+    testImplementation(projects.tests.testutils)
+}