ColumnTemplate: Pattern

Make possible for a column template to match several columns with a pattern:

• name or pattern. That would probably deeply impact code, as name seems to play an important role.
• name + optional suffix pattern. That could have less impact on code, and seems sufficient.

SheetTemplate:

• add containsMatchingColumn
• add getMatchingColumn
• add Builder.put(ColumnTemplate, suffix, value)

ColumnTemplate:

• add suffix (Pattern)
• add getName(suffix)
• add matchesName(name)
• Consistency between suffix and usage?

Need to modify Header to support patterns.
One must take care of performances. It is not acceptable to have a linear time to find the column template matching a name.

Exporting is possible with JSON and XML, but importing is probably more complex / impossible when pattern is used.

• Add mapping between user names and JSON/XML names at begining of sheet
• Add Header in StreamExporter.beginSheet
• Add a way to pass Header of each template in Exporter
  • Pass a Supplier?
  • Pass a Header/Template pair ?
  • Create a dedicated class?
  • Pass additional names for patterns?