Commandline test for unimplemented IR.

test/cmdlineTests/yul_unimplemented/args

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+--ir --error-codes

test/cmdlineTests/yul_unimplemented/err

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+Error (1834): Unimplemented feature error: setToZero for type t_struct$_S_$4_storage not yet implemented! in FILENAME REMOVED
+ --> yul_unimplemented/input.sol:9:9:
+  |
+9 |         delete str;
+  |         ^^^^^^^^^^

test/cmdlineTests/yul_unimplemented/exit

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+1

test/cmdlineTests/yul_unimplemented/input.sol

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+// SPDX-License-Identifier: GPL-3.0
+pragma solidity >=0.0;
+contract test {
+    struct S {
+        uint x;
+    }
+    S str;
+    constructor() {
+        delete str;
+    }
+}