[implement] Improve accessibility for visually impaired users

[windwak3r]

Issue Details

The extension's currently not optimized for visually impaired users.

Proposed solution

Popup:

• Narrator shouldn't voice images
• Narrator should focus on the Main protection switch first
• Narrator should voice Statistics tab when you switch to it
• Narrator should voice the changing of state of Main protection switch

Settings:

• Narrator shouldn't voice images
• Narrator should voice the changing of state of switches
• Narrator shouldn't voice blank spaces and text that is not displayed in the settings
• When you switch to a category (Filters e.g.) narrator should voice the content of chosen category
• Narrator shouldn't voice a feature description when the focus is on a switch

Filtering log:

• Narrator should focus on Filtering log when you open it
• 'Open in a new tab' button should be selectable by Tab
• Narrator should voice 'Request details' tab when you switch to it

Alternative solution

No response