feat: added new feature to let users decode/encode account.memo

[quiet-node]

Description:
This pull request adds a new toggle button that enables users to both encode and decode the account.memo values. The button's visibility is determined by the logic: if account.memo qualifies as a base64 candidate, it will be displayed; otherwise, it remains hidden.

Related issue(s): #694

Fixes #694

UI Demo:

Screen.Recording.2023-09-18.at.7.54.31.PM.mov

** Updated UI **:

Screen.Recording.2023-09-21.at.8.42.11.PM.mov

Notes for reviewer:

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	90.62%	30180 / 33303
🔵	Statements	90.62%	30180 / 33303
🔵	Functions	70.89%	767 / 1082
🔵	Branches	84.19%	3542 / 4207

File Coverage

File	Stmts	% Branch	% Funcs	% Lines	Uncovered Lines
Changed Files
src/components/values/BlobValue.vue	86.91%	81.25%	33.33%	86.91%	28, 33, 37-44, 93-96, 127-131, 142-143, 153-154, 167-168
src/pages/AccountDetails.vue	94.38%	82.79%	50%	94.38%	42-46, 104-108, 386-387, 392-393, 400-401, 423-426, 456-457, 470-471, 489-494

Generated in workflow #496

[sonarcloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication

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[svienot]

As discussed, closing this PR. Issue will be addressed by #775