Offload sampling data (#190)

- update timemory submodule
  - support for load/save of ring_buffers
  - new output keys, e.g. `%nid%`
  - sampling allocator offloading data
- writing sampling data to temporary file
- new advanced config option `OMNITRACE_USE_TEMPORARY_FILES`
- new advanced config option `OMNITRACE_TMPDIR`
- SIGINT signal (i.e. `Ctrl+C`) triggers backtrace + finalization
  - this behavior is common to other profilers

* update output.md docs

* Update omnitrace-avail output keys handling

* update writing metadata

* str format in perfetto_counter_track

* Fix fail regex for mpi-example

* config updates

- OMNITRACE_USE_TEMPORARY_FILES
- OMNITRACE_TMPDIR
- Enable finalization with SIGINT
- code supporting creation of temp files

* sampling offloading to temporary file

* Disable creation of empty temporary files when off

tests/CMakeLists.txt

@@ -811,7 +811,9 @@ if(OMNITRACE_USE_MPI OR OMNITRACE_USE_MPI_HEADERS)
         ENVIRONMENT "${_base_environment}"
         REWRITE_RUN_PASS_REGEX
             "(/[A-Za-z-]+/perfetto-trace-0.proto).*(/[A-Za-z-]+/wall_clock-0.txt')"
-        REWRITE_RUN_FAIL_REGEX "-[0-9][0-9]+.(json|txt|proto)")
+        REWRITE_RUN_FAIL_REGEX
+            "(perfetto-trace|trip_count|sampling_percent|sampling_cpu_clock|sampling_wall_clock|wall_clock)-[0-9][0-9]+.(json|txt|proto)"
+        )
 
     omnitrace_add_test(
         SKIP_RUNTIME SKIP_SAMPLING