Android: enhance the select text context menu

Especially add translate menu support.
By default the system select text context menu as below:

it contains “translate” and “deepL” menu, which are missing in newsblur.

app version: 13.1.2
android version: 13 (PFEM10_13.1.0.210(CN01))
device: OPPO PFEM10 (taro)
sqlite version: 3.32.2
username: jcchen
server: default
speed: 10 feeds in conn:1531 read:1 parse:3 store:12
pending actions: pre:0 post:0
premium: no
prefetch: no
notifications: no
keepread: no
thumbs: yes