feat: use duplicateCompanies when saving a company entity

[AdityaPimpalkar]

When saving a company we need to check if we already have a company entry with a same name.

If duplicateCompanies returns more than one entry, we can give the choice to user to select the corresponding company or create new entry. If it returns a single entry, we automatically map it without giving user the choice to select

(UI/UIX on this to be decided yet - @Bonapara could you help with this? Thanks!)

[FelixMalfait]

I think for v1 we don't want to provide a select, let's just take first match if there are several matches