docs: Add comprehensive technical documentation in Korean

[gurupia]

• Project architecture design document
• Feature specification document
• Technology stack documentation
• Build environment setup guide
• Core technology implementation details
• E-book format consolidated documentation

[github-actions]

CLA Assistant Lite bot:
Thank you for your submission, we really appreciate it. Like many open-source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution. You can sign the CLA by just posting a Pull Request Comment same as the below format.

---

I have read the CLA Document and I hereby sign the CLA

---

_{You can retrigger this bot by commenting recheck in this Pull Request}

[dmex]

1. The CLA needs to be signed.
2. Is this AI generated?
3. Based on common open-source, industry, and Git best practices; All comments, issues, pull request titles, descriptions, code comments, readme files, and documentation are in English.

This keeps the entire project consistent; a single language ensures that contributors from different backgrounds can understand and participate. It also ensures everyone references the same information when it's changed or updated.

I can add the files in this PR to the project website (https://systeminformer.sourceforge.io/) instead of the repository? The website has significantly more traffic than the source repo and more suited for translated documents.

[tdlbugreport]

Shitposts vibe-written document of codebase that you don't understands at all
Bothers to push PR to it
Refuses to elaborate for 4 months

I've seen too much this type of unethical individuals on opensource projects, wasting other ppls precious time.
+1 for closing PR /banning this incompetent imbecile.