Import INP tools / format pattern_id

[jcpiriou]

Hi there,
I have tested the import INP tool in the 4.7.0 version of GW API.
I have detected problems in the patterns imports. The API crashes when:

1. there is a more 16 char pattern_id in the INP. Historically Epanet needed 16 char, but with version 22 it is no longer the case. What about refactoring the database with more than 16 char in pattern_id ? (table inp_pattern and inp_pattern_value)
2. there is a DEMAND section with null pattern.
   ERROR: la clé (pattern_id)=() n'est pas présente dans la table "inp_pattern".