feat: 优化用户设置界面样式

[Karis004]

This pull request includes updates to the styling and functionality of various UI components in scripts/moodle/js/content.js and scripts/setting/jsx/Setting.js. The most notable changes involve adjustments to button styles, form input fields, and layout elements to improve visual consistency and user experience.

Functional Updates:

• jumpToExamBase() in content.js: Added a fly variable to toggle between true and false based on the ExamBaseFly data, improving clarity and state management.

Styling Updates:

Buttons:

• Save Button in SetUserForm: Updated styles for the save button, including changes to padding, border radius, and font size. The button now has a white background with a blue border and text for a cleaner look.
• Logout Button: Adjusted logout button styles to include a white background with a red border and text, along with increased padding and font size for better usability.

Input Fields:

• Text Input in SetUserForm: Redesigned the input field with softer borders, increased height, and a light background to enhance readability and aesthetics.

Layout Elements:

• ExamBaseButton: Improved alignment and spacing by adding left margins and vertical centering for the checkbox and label. [1] [2]
• SettingBlock Header: Changed the header element from H3 to H2, adjusted font size, weight, and alignment, and added left margin for better hierarchy and layout consistency.