Slicing out of bound modification

[jbdoderlein]

This change is linked to this issue
The documentation change is defined in this PR

This change allow the slicing to be out of bound and work with negative index.

With L = [0,1,2,3,4,5,6,7,8,9]; :

	This PR	Rascal v0.41.3
L[..-11]	[]	[1]
L[10..-5]	[9,8,7,6]	Interpreter Failure
L[-11..]	[0,1,2,3,4,5,6,7,8,9]	Interpreter Failure

Fixes #2370

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 46%. Comparing base (3cc9359) to head (f6eec62).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##              main   #2588   +/-   ##
=======================================
  Coverage       46%     46%           
+ Complexity    6628    6624    -4     
=======================================
  Files          793     793           
  Lines        65586   65590    +4     
  Branches      9823    9824    +1     
=======================================
+ Hits         30477   30487   +10     
+ Misses       32753   32750    -3     
+ Partials      2356    2353    -3     

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[PaulKlint]

I think this refinement looks good. Thanks for fixing this and also for including test cases.