Expand allowed types for injection generator

[Arthoni]

Rationale

Currently works only with double

Formats to be handled (To match simulator isolation requirements.):

• string, int, bool, vector, map (or be implicit)

Tasks

• Internal working (TDD based on Generator test file)
• UI adaptation

Refs

Can be inspired from https://forge.inrae.fr/openfluid/tools/sim-isolation/-/tree/main/sim_isolation/templates/generator.file-injection.multi-type?ref_type=heads