omnitrace-avail generate config (#69)

* Config updates

- See PR #69 for details

- change type of OMNITRACE_DL_VERBOSE
- add "deprecated" category to OMNITRACE_ROCM_SMI_DEVICES
- reduce size of perfetto shared memory size hint
- deprecate OMNITRACE_OUTPUT_FILE in favor of OMNITRACE_PERFETTO_FILE
- set papi event choices
- read config file after reading command line
- fix update of OMNITRACE_DL_VERBOSE
- mark several settings as hidden
- timemory update support hidden attribute for settings
- rework get_perfetto_output_filename()
- Hide settings from not available backends

* Rework omnitrace-avail to support dumping configurations

* Overwrite query, tests, output flag

- Support using -O flag when dumping config
- Support checking before overwriting existing config
- Support --force to overwrite existing config
- Fix get_component_info not including omnitrace components
- Testing for dumping config

* Update documentation on omnitrace-avail

* Fix issue with timemory format + "/__w/"

* Update output prefix keys docs

* Rename --dump-config to --generate-config

* Hide MPI related options

- OMNITRACE_PERFETTO_COMBINE_TRACES and OMNITRACE_COLLAPSE_PROCESSES are hidden w/o MPI support

source/lib/omnitrace/library.cpp

@@ -551,8 +551,6 @@ omnitrace_init_tooling_hidden()
 
         perfetto::Tracing::Initialize(args);
         perfetto::TrackEvent::Register();
-
-        (void) get_perfetto_output_filename();
     }
 
     auto _exe = get_exe_name();