feat/fix(whitepaper): convert ton latex to web whitepaper v2

[fakela]

Converted the Ton whitepaper from the original LaTeX source (ton.tex) to Markdown.
This version replaces the earlier PDF-based conversion.

This closes #115

Known differences (to be fixed in future releases):

• Blackboard bold (\mathbb{}) fixes ([#1066](Double check and fix rendering of mathbb font in web whitepaper #1066))
• Italic formatting consistency — deciding when to use \mathit{} vs Markdown italics ([#1068](Use of \mathit{} vs Markdown italics #1068))
• Render issues for formulas on small screens in the web whitepaper (scroll visibility and overflow) ([#1069](Render issues for formulas on small screens in the web whitepaper #1069))

[anton-trunov]

@reveloper @fakela please stick to the commit message convention we use for this project: https://www.conventionalcommits.org/en/v1.0.0/

You can edit the final message before merging.

[reveloper]

@anton-trunov noted.