Print numbers with multiple digits

tests/expectations/print_2_digits.txt

@@ -0,0 +1 @@
+13

tests/expectations/print_more_20_bits.txt

@@ -0,0 +1 @@
+2097150

tests/vm/print_2_digits.elna

@@ -0,0 +1,3 @@
+proc main() {
+  printi(13);
+}

tests/vm/print_more_20_bits.elna

@@ -0,0 +1,3 @@
+proc main() {
+  printi(2097150);
+}