Reorganize source/lib/omnitrace (#51)

- Got rid of `source/lib/omnitrace/include` and `source/lib/omnitrace/src` and merged into `source/lib/omnitrace`
- Updated perfetto submodule to v25.0
- Updated papi submodule

source/lib/omnitrace/library/state.cpp

@@ -0,0 +1,54 @@
+// MIT License
+//
+// Copyright (c) 2022 Advanced Micro Devices, Inc. All Rights Reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#include "library/state.hpp"
+
+#include <string>
+
+namespace std
+{
+std::string
+to_string(omnitrace::State _v)
+{
+    switch(_v)
+    {
+        case omnitrace::State::DelayedInit: return "DelayedInit";
+        case omnitrace::State::PreInit: return "PreInit";
+        case omnitrace::State::Init: return "Init";
+        case omnitrace::State::Active: return "Active";
+        case omnitrace::State::Finalized: return "Finalized";
+    }
+    return {};
+}
+
+std::string
+to_string(omnitrace::Mode _v)
+{
+    switch(_v)
+    {
+        case omnitrace::Mode::Trace: return "Trace";
+        case omnitrace::Mode::Sampling: return "Sampling";
+        case omnitrace::Mode::Coverage: return "Coverage";
+    }
+    return {};
+}
+}  // namespace std