feat: ton adapter docs, refactor installation sections, missing icons

[enesozturk]

Description

• Adds TON adapter documentation
• Refactor's installation docs
• Adds Svelte icon
• Updates Trigger Modal sections as they don't need adapter specific code

Tests

• - Ran the changes locally with Mintlify and confirmed that the changes appear as expected.
• - Ran a grammar check on the updated/created content using ChatGPT.

Direct link to the deployed preview files

• Preview Link 1
• Preview Link 2

[github-actions]

@devin-ai-integration[bot] Please review the tone of voice for the content changes in this PR against Reown's brand guidelines.

📝 Content Review Request

Files to review: 4

• advanced/providers/solana-adapter.mdx
• appkit/overview.mdx
• walletkit/react-native/usage.mdx
• walletkit/web/usage.mdx

Review focus:

• Tone alignment with Reown's brand guidelines
• Clear and accessible language for developers
• Professional yet approachable communication
• Consistent terminology usage

Guidelines summary:

• Clear & Accessible: Translate complex ideas into approachable language
• Professional yet Friendly: Maintain authority while being welcoming
• Developer-Focused: Understand technical audience but remain inclusive
• Avoid: Overly casual language, fear-based messaging, buzzwords, jargon without explanation
• Embrace: Clear explanations, confident tone, transparency, respectful communication

Please analyze the content changes and provide constructive feedback on tone and voice alignment.