refactor module exports for api-core & crypto

[fuxingloh]

What kind of PR is this?:

/kind refactor

What this PR does / why we need it:

As the modules and packages grow in size, it is becoming increasingly complex to manage imports and exports. Bundling all exports into one index.js file for small modules make senses but for large more complex modules it is harder to effectively manage conflicts.

Hence for larger modules or modules with generic exports, it is wise to use named modules at index.js.

• jellyfish-crypto to exports Elliptic, WIF & Bech32 instead of functions
• jellyfish-api-core to exports 'modules' with their category as the module name

Which issue(s) does this PR fixes?:

Fixes #130

Additional comments?

• cleaned up and added missing markdown sections
• cleaned up some JSDocs symbols and language correctness
• refactored some ts interface to be exported
• updated testcontainers dependencies

[netlify]

Deploy preview for jellyfish-defi ready!

Built with commit ca1a732

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[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
packages/jellyfish/dist/jellyfish.umd.js	18.51 KB (+0.43% 🔺)	371 ms (+0.43% 🔺)	158 ms (+0.57% 🔺)	528 ms

[codecov]

Codecov Report

Merging #168 (ca1a732) into main (eba378d) will decrease coverage by 0.06%.
The diff coverage is 94.44%.

@@            Coverage Diff             @@
##             main     #168      +/-   ##
==========================================
- Coverage   95.47%   95.40%   -0.07%     
==========================================
  Files          52       52              
  Lines        1106     1111       +5     
  Branches      137      136       -1     
==========================================
+ Hits         1056     1060       +4     
- Misses         48       49       +1     
  Partials        2        2              

Impacted Files	Coverage Δ
...ages/jellyfish-api-core/src/category/blockchain.ts	100.00% <ø> (ø)
packages/jellyfish-api-core/src/category/mining.ts	100.00% <ø> (ø)
...ckages/jellyfish-api-core/src/category/poolpair.ts	100.00% <ø> (ø)
packages/jellyfish-api-core/src/category/rawtx.ts	100.00% <ø> (ø)
packages/jellyfish-api-core/src/category/token.ts	100.00% <ø> (ø)
packages/jellyfish-api-core/src/category/wallet.ts	100.00% <ø> (ø)
packages/jellyfish-api-jsonrpc/src/index.ts	96.77% <ø> (ø)
packages/jellyfish-crypto/src/hash.ts	100.00% <ø> (ø)
packages/jellyfish-crypto/src/bech32.ts	94.44% <80.00%> (-5.56%)	⬇️
packages/jellyfish-api-core/src/index.ts	100.00% <100.00%> (ø)
... and 2 more

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