Rewrite the solution documentation

[odow]

Preview: https://jump.dev/JuMP.jl/previews/PR2482/manual/solutions/

[codecov]

Codecov Report

Merging #2482 (f1a5b22) into master (5d3de92) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #2482   +/-   ##
=======================================
  Coverage   92.38%   92.38%           
=======================================
  Files          43       43           
  Lines        4663     4664    +1     
=======================================
+ Hits         4308     4309    +1     
  Misses        355      355           

Impacted Files	Coverage Δ
src/JuMP.jl	78.49% <ø> (ø)
src/macros.jl	92.30% <ø> (ø)
src/constraints.jl	93.46% <100.00%> (+0.04%)	⬆️

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