Replace rustls-platform-verifier-android.aar with single class (#6610)

* Replace the `rustls-platform-verifier-android.aar` with the actual source code

* Exclude the platform-verifier code from linters

* Add manual update instructions

* Exclude from Kover too

libraries/rustls-tls/build.gradle.kts

@@ -0,0 +1,24 @@
+import extension.buildConfigFieldBoolean
+
+/*
+ * Copyright (c) 2026 Element Creations Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+plugins {
+    id("io.element.android-library")
+}
+
+android {
+    namespace = "org.rustls.platformverifier"
+
+    buildFeatures {
+        buildConfig = true
+    }
+
+    defaultConfig {
+        buildConfigFieldBoolean("TEST", false)
+    }
+}