Add explicit check for imported limits validity

[gumb0]

• This improves error message for the case when import's max is below min: provided imported table doesn't fit provided limits => provided import's min limit is above import's max limit.
• Also it will allow to simplify imported memory size checks in Enforce updated lower limit of exported memory after grow #755 (to leave only the check memory.size() == min.limit in instantiate).

[codecov]

Codecov Report

Merging #762 (52defb1) into master (7e7d3bf) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #762   +/-   ##
=======================================
  Coverage   99.25%   99.25%           
=======================================
  Files          77       77           
  Lines       11740    11744    +4     
=======================================
+ Hits        11653    11657    +4     
  Misses         87       87           

Flag	Coverage Δ
rust	99.86% <ø> (ø)
spectests	90.54% <50.00%> (-0.04%)	⬇️
unittests	99.22% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
lib/fizzy/instantiate.cpp	100.00% <100.00%> (ø)
test/unittests/instantiate_test.cpp	100.00% <100.00%> (ø)

[gumb0]

Split tests into a separate commit to show the error message change.