Inline Int{Map,Set}.fromList* for list fusion

[meooow25]

Also add benchmarks and property tests.

Fixes #288, fixes #842.

This will be the baseline for #1128, I have an implementation in progress.

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Benchmarks on GHC 9.10.1:

IntSet:

Name                          Time - - - - - - - -    Allocated - - - - -
                                   A       B     %         A       B     %
fromList:asc                   45 μs   45 μs   +0%    480 KB  480 KB   +0%
fromList:asc:fusion            56 μs   39 μs  -30%    768 KB  480 KB  -37%
fromList:asc:sparse            94 μs   92 μs   -2%    864 KB  864 KB   +0%
fromList:asc:sparse:fusion    106 μs   84 μs  -20%    1.1 MB  864 KB  -24%
fromList:random               458 μs  463 μs   +1%    1.5 MB  1.5 MB   +0%
fromList:random:fusion        484 μs  448 μs   -7%    1.8 MB  1.5 MB  -17%

IntMap:

Name                              Time - - - - - - - -    Allocated - - - - -
                                       A       B     %         A       B     %
fromList:asc                      100 μs   97 μs   -3%    864 KB  864 KB   +0%
fromList:asc:fusion               117 μs   88 μs  -24%    1.2 MB  864 KB  -30%
fromList:random                   471 μs  464 μs   -1%    1.5 MB  1.5 MB   +0%
fromList:random:fusion            497 μs  444 μs  -10%    1.9 MB  1.5 MB  -21%
fromListWith:randomDups           320 μs  312 μs   -2%    1.3 MB  1.3 MB   +0%
fromListWith:randomDups:fusion    338 μs  319 μs   -5%    1.7 MB  1.3 MB  -24%