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That screenshot shows that you may be using a stock kernel, and using an Xposed module to fake SELinux permissive status. To actually edit using SQLite, you shouldn't be on a stock kernel, but a modified kernel such as beast kernel...
The tutorial to which I originally linked is for adding a flashlight toggle, though a few posts afterwards shows the steps you wanted (a toggle for mobile data).
I've modified the tutorial to give you that which you desire, mobile data.
The 3 records must edited in a similar fashion to that which is displayed below, adding the MobileData text and semicolon in between each edit.
Your edited fields should be in the identical order sequence for each of the 3 records in the database.
The first 3 screenshots show the highlighted rows, while the last shows the edited record. All you will be doing is adding the text MobileData to each of the 3. Put them wherever you wish for the toggle to appear in your drop-down notification panel..
Good luck!
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