Add more semantic tests for balance/extcodehash

test/libsolidity/semanticTests/various/codebalance_assembly.sol

@@ -0,0 +1,28 @@
+contract C {
+    constructor() payable {}
+
+    function f() public returns (uint256 ret) {
+        assembly {
+            ret := balance(0)
+        }
+    }
+    function g() public returns (uint256 ret) {
+        assembly {
+            ret := balance(1)
+        }
+    }
+    function h() public returns (uint256 ret) {
+        assembly {
+            ret := balance(address())
+        }
+    }
+}
+
+// ====
+// EVMVersion: >=constantinople
+// compileViaYul: also
+// ----
+// constructor(), 23 wei ->
+// f() -> 0
+// g() -> 1
+// h() -> 23