feature(ui-ux): added get private key feature

[fullstackninja864]

What this PR does / why we need it:

Which issue(s) does this PR fixes?:

Fixes DFC-384

Additional comments?:

Developer Checklist:

• [ ] Read your code changes at least once
• [ ] Tested on iOS/Android device (e.g, No crashes, library supported etc.)
• [ ] No console errors on web
• [ ] Tested on Light mode and Dark mode*
• [ ] Your UI implementation visually matched the rendered design*
• [ ] Unit tests*
• [ ] Added e2e tests*
• [ ] Added translations*

[github-actions[bot]]

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[github-actions[bot]]

Build preview for DeFiChain Wallet is ready!

Built with commit 42b04a8bbc6075e164b74713d035793ab5c18188

https://expo.io/@defichain/wallet?release-channel=pr-preview-4120

[codecov-commenter]

Codecov Report

Merging #4120 (6912410) into main (9b52cb0) will increase coverage by 5.33%. The diff coverage is 55.00%.

@@            Coverage Diff             @@
##             main    #4120      +/-   ##
==========================================
+ Coverage   56.06%   61.40%   +5.33%     
==========================================
  Files         438      438              
  Lines       12353    12396      +43     
  Branches     4090     4103      +13     
==========================================
+ Hits         6926     7612     +686     
+ Misses       5343     4693     -650     
- Partials       84       91       +7     

Files	Coverage Δ
...ortfolio/components/BottomSheetAddressDetailV2.tsx	90.09% <ø> (+88.33%)	:arrow_up:
...nsactionAuthorization/TransactionAuthorization.tsx	78.72% <100.00%> (+3.32%)	:arrow_up:
...tfolio/components/CreateOrEditAddressLabelForm.tsx	69.67% <51.78%> (+68.37%)	:arrow_up:

... and 27 files with indirect coverage changes

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more

[chloezxyy]

LGTM, just the lint issue to fix

[linear[bot]]

DFC-384 Allow user to export 0x address private key in Light Wallet

**Summary** Currently, the only way for a user to participate in MetaChain is to * TransferDomain via Convert flow in the Light Wallet * Send TD-ed asset from 0x address in LW to another 0x address in 3rd party wallet(s) * Use 3rd party wallet(s) with custom network to connect to MetaChain **Requirements** The user should be able to ***export***** their *Private Key of their 0x Address in Light Wallet*** Which they can now import the same Private Key into 3rd party wallet(s). The entry point to export their PK can be via > ~Settings > Address Book > Your Address >~ Portfolio (EVM) > EVM Address > EVM Address Details > Export Private Key > Passcode/Verification > Show Private Key (String) Utilizing the Jellyfish SDK, ``` (await account.privateKey()).toString("hex") ``` To extract the Private Key of an account.