feat(store): remove getNestedFileGroup

[dirkdev98]

The query builder now supports everything you ever need of the getNestedFileGroup function and more. Check the release notes for a migration guide.

[github-actions]

==== Benchmark result ====

Node.js version: 14
Total benchmarks: 15
          Passed: 15
          Failed: 0
-----------
router - github static path              200000  iterations    8170  ns/op
router - github path params              100000  iterations   10110  ns/op
compas validator simple                 5000000  iterations     245  ns/op
yup validator simple                     100000  iterations   11985  ns/op
fastest-validator validator simple     10000000  iterations     107  ns/op
compas validator nested                 1000000  iterations    1375  ns/op
yup validator nested                      50000  iterations   46399  ns/op
fastest-validator validator nested      2000000  iterations     537  ns/op
logger - strings                         500000  iterations    2619  ns/op
logger - objects                         500000  iterations    3239  ns/op
logger - deep objects                    200000  iterations    5887  ns/op
uuid                                    5000000  iterations     492  ns/op
uuid.isValid                           10000000  iterations     132  ns/op
isNil                                 500000000  iterations       0  ns/op
isPlainObject                         100000000  iterations      19  ns/op

[github-actions]

==== C8 test coverage ====
Statements: 66.77% ( 27862/41730 )
Branches : 62.33% ( 2978 /4778 )
Functions : 68.33% ( 919 /1345 )
Lines : 66.77% ( 27862 /41730 )

[github-actions]

==== Benchmark result ====

Node.js version: 15
Total benchmarks: 15
          Passed: 15
          Failed: 0
-----------
router - github static path              200000  iterations    8138  ns/op
router - github path params              200000  iterations   11081  ns/op
compas validator simple                 5000000  iterations     260  ns/op
yup validator simple                     100000  iterations   12278  ns/op
fastest-validator validator simple     10000000  iterations     121  ns/op
compas validator nested                 1000000  iterations    1502  ns/op
yup validator nested                      50000  iterations   38596  ns/op
fastest-validator validator nested      2000000  iterations     552  ns/op
logger - strings                         500000  iterations    2798  ns/op
logger - objects                         500000  iterations    3484  ns/op
logger - deep objects                    500000  iterations    5885  ns/op
uuid                                    5000000  iterations     376  ns/op
uuid.isValid                           10000000  iterations     166  ns/op
isNil                                 500000000  iterations       0  ns/op
isPlainObject                         100000000  iterations      20  ns/op