Add VPN P3A usage questions

Description

Adding three P3A questions for VPN.

As a Brave VPN user, when was the last time I enabled the Brave VPN? Brave.VPN.LastUsageTime

1. 0 - 6 days ago
2. 7 - 13 days ago
3. 14 - 20 days ago
4. 21 - 27 days ago
5. 28 - 59 days ago
6. 60 days ago or more

As Brave VPN user, how many different days did I enable the Brave VPN in the last 30 days? Brave.VPN.DaysInMonthUsed

1. 0 days
2. 1 day
3. 2 days
4. 3 to 5 days
5. 6 to 10 days
6. 11 to 15 days
7. 16 to 20 days
8. More than 20 days

As a first time user of the Brave VPN this week, did I enable it again the following day? Brave.VPN.NewUserReturning

1. I have never enabled the Brave VPN
2. I have enabled the Brave VPN, but I’m not a first time Brave VPN user this week
3. I’m a first time Brave VPN user this week but, no, I did not enable the Brave VPN the rest of the week
4. I’m a first time Brave VPN user this week and, yes, I did enable it again the following day
5. I’m a first time Brave VPN user this week and, yes, I enabled it again this week but not the following day

Miscellaneous Information:

Will raise PR soon.

[DJAndries]

@GeetaSarvadnya These are good points. I updated the Windows test plan, P3A wiki and original issue to address your concerns. Thanks

[Uni-verse]

Verified on Samsung Galaxy S21 5G running Android version 12 using the following build(s):

Brave	1.44.97 Chromium: 106.0.5249.55 (Official Build) (64-bit) 
Revision	4d5f098fca6ab7f4b6b7c240be3d9593c2357709-refs/branch-heads/5249@{#531}
OS	Android 12; Build/SP1A.210812.016

Test Scenarios based on https://github.com/brave/brave-browser/issues/23892#issuecomment-1235298332

Brave.VPN.LastUsageTime - Passed

1 = 0 - 6 days ago 2 = 7 - 13 days ago 3 = 14 - 20 days ago 4 = 21 - 27 days ago 5 = 28 - 59 days ago 6 = 60 days ago or more

0 - 6 days ago	7 - 13 days ago	14 - 20 days ago	21 - 27 days ago	28 - 59 days ago	60 days ago or more

Brave.VPN.DaysInMonthUsed - Pass

0 = 0 days 1 = 1 day 2 = 2 days 3 = 3 to 5 days 4 = 6 to 10 days 5 = 11 to 15 days 6 = 16 to 20 days 7 = More than 20 days

1 day	2 days	3 to 5 days	6 to 10 days	11 to 15 days	16 to 20 days	More than 20 days

Brave.VPN.NewUserReturning - Passed

0 = I have never enabled the Brave VPN 1 = I have enabled the Brave VPN, but I’m not a first time Brave VPN user this week 2 = I’m a first time Brave VPN user this week but, no, I did not enable the Brave VPN the rest of the week 3 = I’m a first time Brave VPN user this week and, yes, I did enable it again the following day 4 = I’m a first time Brave VPN user this week and, yes, I enabled it again this week but not the following day

0	1	2	3	4