[FR] pinned tabs.

[gety9]

Use case:
-, frequently used page/tab during current browsing session
Example OCR translation webpage when browsing foreign websites, aiChats when coding or troubleshooting - one can say it's better to use app for them, but then:
--, you constantly switching
--, you have lots of app in memory (android is more likely to kill one of them, including EinkBro cause of memory constrains)

Suggested operation:
-, 1, press on tab 2, click pin, 3, tab goes all the way to right (and never scrolls), 4, if another tab is pinned it goes 2nd from right. All other tabs just have a bit more narrow scrolling space.