Add one off object for importing lawless Map instances

[andyscott]

Adds the ability to import just the lawless instances for Map.

Some context:
Right now the most sane way to import lawless map instances is via import alleycats.std.all._. However, this is problematic due to conflicting ambiguous instances between lawless Try and regular Try:

[error] SomeFile.scala:38: ambiguous implicit values:                                                                
[error]  both method catsStdInstancesForTry in trait TryInstances of type => cats.MonadError[scala.util.Try,Throwable] with cats.CoflatMap[scala.util.Try] with cats.Traverse[scala.util.Try] with cats.Monad[scala.util.Try]                                                                                             
[error]  and method legacyTryBimonad in trait LegacyTryInstances of type (implicit e: export.ExportOrphan[cats.Bimonad[scala.util.Try]])cats.Bimonad[scala.util.Try]                                             

[andyscott]

At this rate I'll get approval from every maintainer before end of day!

[tpolecat]

Sorry for the delay. Approved!

[non]

👍

[codecov-io]

Codecov Report

Merging #2345 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2345   +/-   ##
=======================================
  Coverage   95.09%   95.09%           
=======================================
  Files         345      345           
  Lines        5991     5991           
  Branches      217      219    +2     
=======================================
  Hits         5697     5697           
  Misses        294      294

Impacted Files	Coverage Δ
...eycats-core/src/main/scala/alleycats/std/map.scala	4.76% <ø> (ø)	⬆️

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