ide: couple additions to Rider/R# settings

[Carbenium]

• Add a new reformat profile which excludes import optimisations
• Do not place "else if" constructs on separate lines

[arfbtwn]

I'm going to have to get better at this... Cherry-picked this one to avoid the merge commit, sha1 in master: cbccc5e29

Cheers man :+1: