Add wasm tacle-bench targets

targets/wasm-tacle/app/lift/README

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+Lift Controller
+===============
+
+This is a port of Martin Schoeberl's Lift Controller [1] to C. The orignal 
+version is an embedded Java program that controls a lift in a factory in Turkey. 
+Benedikt Huber has ported the controller to C and Lucid [3]. It has been used in 
+various research projects, including T-CREST[3] and the F-Shell test generator 
+[4].
+
+Overview
+--------
+
+The sensors of the system consist of several buttons, a load sensor (to detect 
+if the lift is positioned at the load), sensors to detect bottom and top 
+position, and an index sensor for the motor. The motor is controlled using two 
+digital outputs, one for its direction and one to turn it off or on.
+
+The controller itself consists of an initialization routine ctrl_init(), the 
+controller step ctrl_loop(), which should be invoked every 10ms. Outside a test 
+environment, ctrl_get_vals() should be called to read sensors before the 
+controller runs, and ctrl_set_vals() should be called to set actuators after the 
+controller ran.
+
+The digital IO interface (9 digital inputs, 2 digital outputs and 14 LEDs are 
+used) is realized as global volatile variables (simio_in, simio_out, simio_led), 
+that can be modified and read by test drivers or by the runtime environment.
+
+[1] http://www.jopdesign.com/doc/jembench.pdf
+[2] https://github.com/visq/99lifts
+[3] http://www.t-crest.org
+[4] http://forsyte.at/software/fshell/