[llvm-advisor] Add parser foundation for optimization analysis

- implement data models and yaml parsing for remarks

Author: miguelcsx

llvm/tools/llvm-advisor/view/parser/__init__.py

@@ -0,0 +1,14 @@
+from .yaml_parser import OptimizationRecordParser
+from .models import OptimizationRemark, CompilationUnit, Project, RemarkType, DebugLocation, RemarkArgument
+from .analyzer import RemarkAnalyzer
+
+__all__ = [
+    'OptimizationRecordParser',
+    'OptimizationRemark',
+    'CompilationUnit',
+    'Project',
+    'RemarkType',
+    'DebugLocation',
+    'RemarkArgument',
+    'RemarkAnalyzer'
+]