Remove auto-increment from contribution_queue

[NejcZdovc]

Currently we have auto increment on contribution_queue. This complicates things now that we moved DB into shared lib. To simplify this we should switch from INT AUTOINCREMENT to string uuid. This way we generate it ahead of time and publishers for the queue can be inserted without any problems.

[LaurenWags]

Verified passed with

Brave	1.11.65 Chromium: 83.0.4103.97 (Official Build) dev (64-bit)
Revision	326d148b9655369b86498d9ecca39f63dd2bdd2d-refs/branch-heads/4103@{#657}
OS	macOS Version 10.14.6 (Build 18G3020)

• Verified test plan from Remove auto increment from contribution_queue brave-core#5642
• Confirmed on contribution_queue and contribution_queue_publishers tables the contribution_queue_id is of type Text.

• Confirmed tipping via various methods was processed and displayed in UI as expected:

Scenario 1 - tipping using VG (UGP grant)

Scenario 2 - tipping with restored wallet (anon user funds)

Scenario 3 - tipping with KYC'd Uphold wallet

Verification passed on

Brave | 1.11.68 Chromium: 83.0.4103.106 (Official Build) dev (64-bit)
-- | --
Revision | ce7134bb3d95141cd18f1e65772a4247f282d950-refs/branch-heads/4103@{#694}
OS | Windows 10 OS Version 1903 (Build 18362.30)

• Verified test plan from Remove auto increment from contribution_queue brave-core#5642
• Confirmed on contribution_queue and contribution_queue_publishers tables the contribution_queue_id is of type Text.
  
  

One time tip using UGP grants:

Tipping with restored wallet

Tipping with KYC'd account

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Verified passed with

Brave	1.11.84 Chromium: 83.0.4103.116 (Official Build) dev (64-bit)
Revision	8f0c18b4dca9b6699eb629be0f51810c24fb6428-refs/branch-heads/4103@{#716}
OS	Linux

• Verified test plan from Remove auto increment from contribution_queue brave-core#5642
• Confirmed on contribution_queue and contribution_queue_publishers tables the contribution_queue_id is of type Text.

• Confirmed tip was processed and displayed in UI as expected: