[CI] Need test for self open

[nscottnichols]

Would be good to add a test to "self opening" check.

e .g.

test this:

THAPI/backends/opencl/tracer_opencl_helpers.include.c

Lines 1188 to 1192 in ba57ae3

	if (handle) {
	void* ptr = dlsym(handle, "clGetPlatformIDs");
	if (ptr == (void*)&clGetPlatformIDs) { //opening oneself
	dlclose(handle);
	handle = NULL;

[TApplencourt]

Good luck to find a CI system with cuda installed :D I'm stupid this is OpenCL. So yes good idea :) !

[Kerilk]

No, to self open you don't need the target library. We would fail before opening it. A simple program calling one of the initialization function + setting the environment variable should suffice.