Add a set PV for the SeleneMotor

- make the number of extra parameters in SINQController configurable
    - add database entry for the motor set field
    - add the new function "setMotorPosition_" to the Selene controller
    - execute Qx59=<pos> to set the new position

sinqEPICSApp/Db/motorSet.db

@@ -0,0 +1,6 @@
+# workaround over set position
+record(ao, "$(P)$(M)-SetPosition") {
+    field(DTYP, "asynFloat64")
+    field(OUT, "@asyn($(PORT),$(N),1) SET_MOTOR_POSITION")
+    field(PINI, "YES")
+}