docs: update connectionless documentation and examples

[chereseeriepa]

Description:

This PR updates the documentation and examples for the connectionless flow. This includes diagrams outlining the steps involved with connectionless issuance and verification of verifiable credentials.

Checklist:

• My PR follows the contribution guidelines of this project
• My PR is free of third-party dependencies that don't comply with the Allowlist
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have checked the PR title to follow the conventional commit specification

[elribonazo]

@chereseeriepa is this ready for review, if so, please change the status to open, then we'll start review process :)

[elribonazo]

@chereseeriepa We've recently used those in the SDJWT workshop we ran and i see all the doc improvements are correct, gonna check couple additional things.

What I'd please ask you is try to and configure DCO on your machine and fix the commits. If you click here also documented in our Contribution Guidelines

It will show you what commands to run to fix it, thank you!

[elribonazo]

For the rest, the PR looks awesome and is very much appreciated @chereseeriepa !

[coveralls]

Pull Request Test Coverage Report for Build 11566145795

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 3 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.06%) to 72.788%

---

Files with Coverage Reduction	New Missed Lines	%
src/domain/utils/DER.ts	3	35.14%

Totals
Change from base Build 11556271983:	-0.06%
Covered Lines:	3434
Relevant Lines:	4514

---

💛 - Coveralls