WKS-2076 - Add base64 encoding support for source code

[ehl-jf]

• The pull request is targeting the main branch.
• The code has been validated to compile successfully by running go vet ./....
• The code has been formatted properly using go fmt ./....
• All static analysis checks passed.
• All tests have passed. If this feature is not already covered by the tests, new tests have been added.
• All integration tests have passed locally as they cannot be automated yet.
• All changes are detailed at the description. if not already covered at JFrog Documentation, new documentation have been added.

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[github-actions]

Unit Tests Results

231 tests  +4   231 ✅ +4   1m 19s ⏱️ ±0s
  3 suites ±0     0 💤 ±0 
  1 files   ±0     0 ❌ ±0 

Results for commit fd61cf6. ± Comparison against base commit 984d60a.

♻️ This comment has been updated with latest results.