Fix Table Inheritance handling and consider them as normal tables in the workflow

[priyanshi-yb]

1. Added an end-to-end test for inherited tables, migrating them as normal tables
   005a188 this commit adds test which fails in import-data phase.

if required quote column names: quote attribute name for "state" in table [CurrentName=(cities) SourceName=(cities) TargetName=(cities)]: find best matching column name for "state" in table [CurrentName=(cities) SourceName=(cities) TargetName=(cities)]: column "state" not found amongst table columns [population elevation name]

2. Modifying the GetPartitions and ParentTableOfPartition function's queries to only considers partitioned tables, not inherited ones.