feat: replace encryption with b64 encoding

[arturshadnik]

Issue

#281

Description

Since the purpose of encrypting secret values was simply to obfuscate, rather than truly encrypt, we can simplify the process by base64 encoding them instead.

This PR:

• switches all secret encryption to base64 encoding
• removes the now unused crypto pkg
• updates integration tests to replace the encrypted values with encoded ones
• alphabetizes integration test data template by plugin

[codecov]

Codecov Report

Attention: Patch coverage is 60.41667% with 38 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
pkg/components/validator.go	60.41%	25 Missing and 13 partials ⚠️

@@            Coverage Diff             @@
##             main     #289      +/-   ##
==========================================
+ Coverage   49.42%   49.63%   +0.21%     
==========================================
  Files          46       45       -1     
  Lines        8101     8004      -97     
==========================================
- Hits         4004     3973      -31     
+ Misses       3231     3189      -42     
+ Partials      866      842      -24     

Files with missing lines	Coverage Δ
pkg/components/validator.go	58.61% <60.41%> (+9.09%)	⬆️

... and 2 files with indirect coverage changes

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