use rebuild for similar of dimarray with new axes

[tiemvanderdeure]

closes #1077 (comment)

With new axes it never makes sense to keep refdims - since the axes might have new dimensions. For the metadata I've now opted to keep this since this is what happens for similar(da, Int) - but then we could also choose to always drop metadata. I'm not sure

[tiemvanderdeure]

I might actually be more in favour of by default dropping metadata. Behaviour like this is a bit weird.

using DimensionalData, Rasters
ra = Raster(rand(X(1:10), Y(1:10), Z(1:1)); metadata = Dict("A" => 1), name = :myraster)
ra2 = Raster(rand(X(1:10), Y(1:10), Z(1:1)))

ra .+ ra2 # has metadata
ra2 .+ ra # has no metadata

But I don't know what the total consequences of a change like this would be

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.30%. Comparing base (648635c) to head (7e661ba).

Additional details and impacted files

@@            Coverage Diff            @@
##           breaking    #1082   +/-   ##
=========================================
  Coverage     86.29%   86.30%           
=========================================
  Files            56       56           
  Lines          5602     5606    +4     
=========================================
+ Hits           4834     4838    +4     
  Misses          768      768           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[rafaqz]

I'm really not sure how not copying metadata plays out for Rasters.jl lets leave it for now until we have a more coherent overall metadata strategy.

similar probably want a test too :)

[tiemvanderdeure]

similar probably want a test too :)

It is really extensively tested - and had to make some changes so this change is tested as well

[rafaqz]

I mean there is no test of what you changed here

(I guess it's hard because in the case it's a DimArray either way - we probably need to use a test AbstractDimArray)