SMTChecker: Add command-line test for Eldarica

Author: blishko

test/cmdlineTests/model_checker_solvers_eld/args

@@ -0,0 +1 @@
+--model-checker-engine chc --model-checker-solvers eld

test/cmdlineTests/model_checker_solvers_eld/err

@@ -0,0 +1,5 @@
+Warning: CHC: Assertion violation happens here.
+ --> model_checker_solvers_eld/input.sol:5:3:
+  |
+5 | 		assert(x > 0);
+  | 		^^^^^^^^^^^^^

test/cmdlineTests/model_checker_solvers_eld/input.sol

@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-3.0
+pragma solidity >=0.0;
+contract test {
+	function f(uint x) public pure {
+		assert(x > 0);
+	}
+}