#13908 Python: Add API to read well log information

Expose well logs attached to a well path through the Python API. A new
`well_path.well_logs()` returns the list of well logs, and each
`WellLog` gains `channel_names()` and `well_log_data()` for reading
channel names, measured depth, optional TVD MSL/RKB, and channel
values.

The read methods are registered on the abstract `RimWellLog` base
class and use the common `RigWellLogData` interface so they work for
imported, LAS and OSDU well logs alike.

ApplicationLibCode/ProjectDataModel/WellPath/RimWellPath.cpp

@@ -134,7 +134,7 @@ RimWellPath::RimWellPath()
     CAF_PDM_InitScriptableFieldNoDefault( &m_completionSettings, "CompletionSettings", "Completion Settings" );
     m_completionSettings = new RimWellPathCompletionSettings;
 
-    CAF_PDM_InitFieldNoDefault( &m_wellLogs, "WellLogs", "Well Logs" );
+    CAF_PDM_InitScriptableFieldNoDefault( &m_wellLogs, "WellLogs", "Well Logs" );
     m_wellLogs.registerKeywordAlias( "WellLogFiles" );
 
     CAF_PDM_InitFieldNoDefault( &m_3dWellLogCurves, "CollectionOf3dWellLogCurves", "3D Track" );