FA2 QKV SMEM Swizzle✔️

What's Changed

• [Doc] Refactor README for better readability✔️ by @DefTruth in #186
• [FA2] shared-kv + fully smem swizzle✔️ by @DefTruth in #187
• [FA2] tiling-qk + fully smem swizzle✔️ by @DefTruth in #188
• [FA2] shared-qkv + fully swizzle q/qk/qkv✔️ by @DefTruth in #189
• [FA2] hotfix launch setting -> shared-kv d=256✔️ by @DefTruth in #190
• [FA2] support shared-qkv + O s2g kernel✔️ by @DefTruth in #191
• [FA2] Update RTX 3080 Laptop performance✔️ by @DefTruth in #192
• [Doc] Refactor README for better readability✔️ by @DefTruth in #193

Full Changelog: v2.6.12...v2.6.13