added test to test output of "halcmd show" for u64/s64

tests/hal-show/expected

@@ -0,0 +1 @@
+to be filled

tests/hal-show/test.hal

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+# This should print every data type as input and output
+loadrt conv_bit_u32 count=1
+loadrt conv_u32_bit count=1
+loadrt conv_float_s32 count=1
+loadrt conv_s32_float count=1
+loadrt conv_s64_u64 count=1
+loadrt conv_u64_s64 count=1
+net net-conv-float-s32.0.in conv-float-s32.0.in
+net net-conv-float-s32.0.out conv-float-s32.0.out
+net net-conv-s32-float.0.in conv-s32-float.0.in
+net net-conv-s32-float.0.out conv-s32-float.0.out
+net net-conv-bit-u32.0.in conv-bit-u32.0.in
+net net-conv-bit-u32.0.out conv-bit-u32.0.out
+net net-conv-s64-u64.0.in conv-s64-u64.0.in
+net net-conv-s64-u64.0.out conv-s64-u64.0.out
+net net-conv-u32-bit.0.in conv-u32-bit.0.in
+net net-conv-u32-bit.0.out conv-u32-bit.0.out
+net net-conv-u64-s64.0.in conv-u64-s64.0.in
+net net-conv-u64-s64.0.out conv-u64-s64.0.out
+loadrt ilowpass count=1
+show pin
+show sig
+show param