Add psConfig and getName grammar for receptionist task

psConfig/tasks/receptionist/receptionist.conf

+[main]
+startdb=50;
+uttdb=55;
+silence=400;
+timeout=8;
+openDeviceDirectly=yes;
+alsadevice=sysdefault;
+
+[pocketsphinxinstance]
+name=getName;
+jsgf=../../../psGrammar/tasks/receptionist/getName.jsgf;
+rsbscope=/speechrec/psa/receptionist/getname;
+bestpath=no;
+autoload=yes;

psGrammar/tasks/receptionist/getName.jsgf

+#JSGF V1.0;
+grammar getName;
+public <confirm> = [<prefix>] <name> [<robot>];
+
+<prefix> = (<iam> | <nameis> | <callme>);
+
+<iam> = (i am);
+
+<nameis> = ((my | the) name is);
+
+<callme> = (call me);
+
+<name> = (peter | robert | anna | sophie);
+
+<robot> = (tobi) | (robot) | (biron) | (pepper);