Implement Rust CLI tests (#372)

# Description

Closes #365 

Ports all `resolc` CLI tests to Rust and removes the CLI TypeScript
tests.

crates/resolc/src/tests/cli/standard_json.rs

@@ -0,0 +1,24 @@
+//! The tests for running resolc with standard JSON option.
+
+#![cfg(test)]
+
+use crate::tests::cli::utils;
+
+const JSON_OPTION: &str = "--standard-json";
+
+#[test]
+fn runs_with_valid_input_file() {
+    let arguments = &[JSON_OPTION];
+    let resolc_result =
+        utils::execute_resolc_with_stdin_input(arguments, utils::STANDARD_JSON_CONTRACTS_PATH);
+    utils::assert_command_success(&resolc_result, "Providing a valid input file to stdin");
+
+    assert!(
+        resolc_result.stdout.contains("contracts"),
+        "Expected the output to contain a `contracts` field."
+    );
+
+    let solc_result =
+        utils::execute_solc_with_stdin_input(arguments, utils::STANDARD_JSON_CONTRACTS_PATH);
+    utils::assert_equal_exit_codes(&solc_result, &resolc_result);
+}