Add tasks for all the new languages

Task/Identity-matrix/ERRE/identity-matrix.erre

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+PROGRAM IDENTITY
+
+!$DYNAMIC
+DIM A[0,0]
+
+BEGIN
+  PRINT(CHR$(12);) ! CLS
+  INPUT("Matrix size",N%)
+  !$DIM A[N%,N%]
+  FOR I%=1 TO N% DO
+    A[I%,I%]=1
+  END FOR
+! print matrix
+  FOR I%=1 TO N% DO
+    FOR J%=1 TO N% DO
+      WRITE("###";A[I%,J%];)
+    END FOR
+    PRINT
+  END FOR
+END PROGRAM