Improve instructions for getting game logs and install logs

The current instructions for getting game/install logs have a whole bunch of ways you can get the install logs/game logs.

- https://07th-mod.com/wiki/Higurashi/support/

It would be better if there were one main way (or one way per each operating system), and all the alternative options show in a pop up section. Probably boiling down to "run the installer, then click this button".

Some installer changes may be necessary though - to get the installer logs .zip file, there should be a button always available at the top of the page, and also a button on the Troubleshooting page.

It would also be good if the install log zip could dump the game log of all detected games (the Troubleshooting page already detects all installed games, so should be able to reuse that logic)

檢視當前的支援 wiki 頁面 https://07th-mod.com/wiki/Higurashi/support/，以了解現有的日誌收集方法。檢查安裝程式的 UI 程式碼，新增日誌匯出按鈕，可能在前端元件中。檢查疑難排解頁面偵測已安裝遊戲的邏輯，以便在收集日誌時重複使用。目標是簡化說明，為每個作業系統提供一種主要方法，並確保安裝程式可以透過按鈕匯出日誌。

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