Implement async event streaming

Sources/Inotify/RawInotifyEvent.swift

@@ -0,0 +1,12 @@
+public struct RawInotifyEvent: Sendable, Hashable, CustomStringConvertible {
+	public let watchDescriptor: Int32
+	public let mask: InotifyEventMask
+	public let cookie: UInt32
+	public let name: String
+
+	public var description: String {
+		var parts = ["RawInotifyEvent(wd: \(watchDescriptor), mask: \(mask), name: \"\(name)\""]
+		if cookie != 0 { parts.append("cookie: \(cookie)") }
+		return parts.joined(separator: ", ") + ")"
+	}
+}