Convert counter def format to YAML (#976)

* Convert counter def format to YAML

Converts counter definition format to YAML with the
following structure:

```yaml
COUNTER_NAME:
 architectures:
  gfxXX: // Can be more than one, / deliminated if they share idential data
    block: <Optional>
    event: <Optional>
    expression: <optional>
    description: <Optional> // In case per arch notes are needed
  gfxYY:
    ...
 description: General counter desctiption
```

All counters (derived and hardware) are now defined
in the same file for ease of future additions/subtractions.

Removes existing XML parser. Keeps the existing XML
definitions for now (since other tools still rely on
its presence).

source/lib/rocprofiler-sdk/counters/tests/core.cpp

@@ -208,6 +208,7 @@ TEST(core, check_packet_generation)
              */
             rocprofiler_profile_config_id_t cfg_id = {};
             rocprofiler_counter_id_t        id     = {.handle = metric.id()};
+            ROCP_ERROR << fmt::format("Generating packet for {}", metric);
             ROCPROFILER_CALL(
                 rocprofiler_create_profile_config(agent.get_rocp_agent()->id, &id, 1, &cfg_id),
                 "Unable to create profile");