Added and documented functions associated to extremely strong Shoda pairs

[MSugandha]

Added function

 `IsExtremelyStrongShodaPair`

and documented the following:

• IsExtremelyStrongShodaPair
• ExtremelyStrongShodaPairs
• IsNormallyMonomial

[codecov[bot]]

Codecov Report

Merging #31 into master will decrease coverage by 0.03%. The diff coverage is 56.25%.

@@            Coverage Diff             @@
##           master      #31      +/-   ##
==========================================
- Coverage   69.66%   69.63%   -0.04%     
==========================================
  Files          11       11              
  Lines        4332     4337       +5     
==========================================
+ Hits         3018     3020       +2     
- Misses       1314     1317       +3

Impacted Files	Coverage Δ
lib/auxiliar.gi	60.99% <ø> (-0.93%)	:arrow_down:
lib/ExtremeSSPs.gi	100% <100%> (ø)	:arrow_up:
PackageInfo.g	32.07% <48.14%> (ø)	:arrow_up:

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[olexandr-konovalov]

@MSugandha thanks - at the moment all looks good to me.