Added a feature to save logs to local storage

[ALEX5402]

• Added export logs to local storage 1664

[tiann]

we don't need two entries in settings, "save log" and "send log", it's strange, we only need one entry, when clicked, you can prompt user to choose

[ALEX5402]

we don't need two entries in settings, "save log" and "send log", it's strange, we only need one entry, when clicked, you can prompt user to choose

ok got it

choose

can i add a alert dialog there to choose user what to do ?

[tiann]

can i add a alert dialog there to choose user what to do ?

that's ok

[ALEX5402]

can i add a alert dialog there to choose user what to do ?

that's ok

done sir please check this commit

i used bottom snack bar instead of alert dialog because it looks bad