feat(jellyfish-testing): Add TestingWrapper as an abstraction layer approach 2

[surangap]

What this PR does / why we need it:

Approach using generics and union for testing refactor

Which issue(s) does this PR fixes?:

Fixes #

Additional comments?:

[codeclimate]

Code Climate has analyzed commit eef40b6 and detected 0 issues on this pull request.

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[codecov]

Codecov Report

Merging #1114 (eef40b6) into main (ddc6b7f) will decrease coverage by 2.35%.
The diff coverage is 90.90%.

@@            Coverage Diff             @@
##             main    #1114      +/-   ##
==========================================
- Coverage   95.69%   93.34%   -2.36%     
==========================================
  Files         169      171       +2     
  Lines        5045     5066      +21     
  Branches      657      658       +1     
==========================================
- Hits         4828     4729      -99     
- Misses        208      323     +115     
- Partials        9       14       +5     

Impacted Files	Coverage Δ
packages/jellyfish-testing/src/testing.ts	95.12% <90.00%> (-4.88%)	⬇️
packages/jellyfish-testing/src/anchor.ts	100.00% <100.00%> (ø)
packages/jellyfish-testing/src/fixture.ts	100.00% <100.00%> (ø)
packages/jellyfish-testing/src/icxorderbook.ts	100.00% <100.00%> (ø)
packages/jellyfish-wallet-encrypted/src/hd_node.ts	12.12% <0.00%> (-87.88%)	⬇️
...s/legacy-api/src/controllers/PoolPairController.ts	35.00% <0.00%> (-65.00%)	⬇️
...nsaction-builder/src/txn/txn_builder_masternode.ts	40.00% <0.00%> (-60.00%)	⬇️
packages/jellyfish-address/src/script/P2SH.ts	45.45% <0.00%> (-50.00%)	⬇️
...ckages/jellyfish-network/src/TransactionSkipped.ts	37.50% <0.00%> (-50.00%)	⬇️
...action-builder/src/txn/txn_builder_icxorderbook.ts	64.28% <0.00%> (-35.72%)	⬇️
... and 36 more

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