fix: improved AbilityTuple

[scriptcoded]

#615 forces the user to define their AppAbility like PrismaAbility<[string, 'all' | Subjects<{ ... }>]>. This fix makes sure the user does not have to provide the 'all' union and can define it like PrismaAbility<[string, Subjects<{ ... }>]>.

[codecov-commenter]

Codecov Report

Merging #616 (06ee9ee) into master (9f91ac4) will decrease coverage by 0.21%.
The diff coverage is 91.89%.

@@            Coverage Diff             @@
##           master     #616      +/-   ##
==========================================
- Coverage   93.95%   93.74%   -0.22%     
==========================================
  Files          32       32              
  Lines         711      719       +8     
  Branches      167      175       +8     
==========================================
+ Hits          668      674       +6     
- Misses         12       13       +1     
- Partials       31       32       +1     

Impacted Files	Coverage Δ
packages/casl-prisma/src/PrismaAbility.ts	100.00% <ø> (ø)
...ckages/casl-prisma/src/prisma/PrismaQueryParser.ts	93.84% <75.00%> (-1.07%)	⬇️
packages/casl-mongoose/src/accessible_records.ts	80.00% <88.88%> (-5.19%)	⬇️
packages/casl-ability/src/utils.ts	95.23% <91.30%> (-0.82%)	⬇️
packages/casl-ability/src/RuleIndex.ts	94.87% <95.23%> (+0.42%)	⬆️
packages/casl-ability/src/structures/LinkedItem.ts	100.00% <100.00%> (ø)
packages/casl-angular/src/AbilityModule.ts	100.00% <100.00%> (ø)
packages/casl-angular/src/pipes.ts	100.00% <100.00%> (+4.16%)	⬆️
packages/casl-mongoose/src/accessible_fields.ts	95.23% <100.00%> (ø)
packages/casl-mongoose/src/mongo.ts	100.00% <100.00%> (ø)
... and 4 more

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[stalniy]

all may not be part of requirements. That’s why it’s optional. That’s why it was not a part of Subjects