[rocprofiler-compute] Enable running tests from installation only for TheRock setup (#2067)

* Enable running tests from installation only

* Use cmake option -DTEST_FROM_INSTALL=ON to enable running tests from installation folder only
    * It is not possible to run tests from build folder in this case
    * This option prevents changing working directory to source folder

* Fix SourceFileLoader to import rocprof-compute main module correctly

* Install sample executables in the test folder

* fix num_xcds_cli_output test

* Fix tests

* Skip autogen. config. test and add a TODO task for re-design of this
  test

* Add flexible import of source code in test_gpu_specs.py

* Update cmake to install tests/workloads folder when INSTALL_TESTS=ON

* Fix sys.argv[0] for tests

* fix live attach detach test

projects/rocprofiler-compute/tests/test_TCP_counters.py

@@ -26,16 +26,11 @@
 import csv
 import re
 import subprocess
-from importlib.machinery import SourceFileLoader
 from pathlib import Path
 
 import pytest
 import test_utils
 
-rocprof_compute = SourceFileLoader(
-    "rocprof-compute", "src/rocprof-compute"
-).load_module()
-
 config = {}
 config["vseq"] = ["./tests/vsequential_access"]
 config["vrand"] = ["./tests/vrandom_access"]