feat: add Unicode support and recover tests

[Shan-Zhou]

related #419

showcase:

(I enabled per-monitor DPI locally so the layout might look a little weird)

---

it works for

OutputDebugStringA(u8"Hello, 世界! 🚀\n");

to fully support OutputDebugStringW, the sender side needs to set

<activeCodePage xmlns="http://schemas.microsoft.com/SMI/2019/WindowsSettings">UTF-8</activeCodePage>

and then

OutputDebugStringW(L"Hello, 世界! 🚀\n");

BOM is also stripped in case it breaks filter (e.g. using regex to filter logs starting with xxx)

---

btw a process can only be attached by a single debugger and hence it might not be a good idea to always attach a debugger from DebugView side