Add test cases from codex

[arthurvergacas]

No description provided.

[Grillo-0]

No need for this fancy var args, just let the user pass the vec of libraries

[arthurvergacas]

i used this pattern because it was also used in vunit_run_vinumc_ok

should we change vunit_run_vinumc_ok as well??

vinum/subprojects/vunit/vunit.c

Lines 371 to 384 in b4b69e8

	void vunit_run_vinumc_ok(struct vunit_test_ctx *ctx, char *input, char **output, ...) {
	char *err = NULL;
	va_list ap;
	va_start(ap, output);
	int ret = vunit_run_vinumcv(ctx, input, output, &err, ap);
	va_end(ap);
	if (strlen(err) != 0) {
	fprintf(stderr, "PROGRAM STDERR:\n%s\n", err);
	}
	VUNIT_ASSERT_EQ(ctx, ret, 0);
	VUNIT_ASSERT_EQ(ctx, strlen(err), 0);
	}

[arthurvergacas]

we agreed to use a vec and instad create a helper function inside vec that receives the varargs.

We will take another look

[JeanJPNM]

The compiler doesn't support top level text, requiring it to be wrapped inside a declaration first, (look at #48, #55 and #61).

[JeanJPNM]

Blank reduction features, these features are already implemented, however the vinum compiler does not support top-level text (issue #48, fixed by #55, reverted for some reason I don't remember in #61) requiring these tests to be wrapped in a parent block to work.