feat: added PicoW_Sensor code template

Credits to @ext-erich.styger that provided the template

TSM_PicoW_Sensor/McuLib/RNet/RStack.h

@@ -0,0 +1,20 @@
+/**
+ * \file
+ * \brief Radio Network Stack Main file
+ * \author (c) 2013-2014 Erich Styger, http://mcuoneclipse.com/
+ * \note MIT License (http://opensource.org/licenses/mit-license.html), see 'RNet_License.txt'
+ *
+ * This interface is the common entry point for the stack.
+ */
+
+#ifndef RSTACK_H_
+#define RSTACK_H_
+
+/*! \brief Stack initialization function */
+void RSTACK_Init(void);
+
+/*! \brief Stack de-initialization function */
+void RSTACK_Deinit(void);
+
+#endif /* RSTACK_H_ */
+