Rewrite netstats polling (#13368)

* Rewrite netstats polling
As modern module
Don't use snmpgetnext as it can result in extra data returned

* remove copyrights on interfaces

* typehints

* fix silly backslashes

LibreNMS/Interfaces/Polling/Netstats/IcmpNetstatsPolling.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace LibreNMS\Interfaces\Polling\Netstats;
+
+interface IcmpNetstatsPolling
+{
+    public function pollIcmpNetstats(array $oids): array;
+}

LibreNMS/Interfaces/Polling/Netstats/IpForwardNetstatsPolling.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace LibreNMS\Interfaces\Polling\Netstats;
+
+interface IpForwardNetstatsPolling
+{
+    public function pollIpForwardNetstats(array $oids): array;
+}

LibreNMS/Interfaces/Polling/Netstats/IpNetstatsPolling.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace LibreNMS\Interfaces\Polling\Netstats;
+
+interface IpNetstatsPolling
+{
+    public function pollIpNetstats(array $oids): array;
+}

LibreNMS/Interfaces/Polling/Netstats/SnmpNetstatsPolling.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace LibreNMS\Interfaces\Polling\Netstats;
+
+interface SnmpNetstatsPolling
+{
+    public function pollSnmpNetstats(array $oids): array;
+}

LibreNMS/Interfaces/Polling/Netstats/TcpNetstatsPolling.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace LibreNMS\Interfaces\Polling\Netstats;
+
+interface TcpNetstatsPolling
+{
+    public function pollTcpNetstats(array $oids): array;
+}

LibreNMS/Interfaces/Polling/Netstats/UdpNetstatsPolling.php

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+<?php
+
+namespace LibreNMS\Interfaces\Polling\Netstats;
+
+interface UdpNetstatsPolling
+{
+    public function pollUdpNetstats(array $oids): array;
+}