lyngio: added processes and docs for it, JVM and linux

lyngio/src/jsMain/kotlin/net/sergeych/lyngio/process/PlatformJs.kt

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
+ *
+ * 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.
+ *
+ */
+
+package net.sergeych.lyngio.process
+
+actual fun getPlatformDetails(): PlatformDetails {
+    return PlatformDetails(
+        name = "JavaScript",
+        version = "unknown",
+        arch = "unknown"
+    )
+}
+
+actual fun isProcessSupported(): Boolean = false
+
+actual fun getSystemProcessRunner(): LyngProcessRunner {
+    throw UnsupportedOperationException("Processes are not supported on JS")
+}