Reorganize list files and move to brave/lists

[antonok-edm]

Right now the lists are all over the place, with brave-unbreak.txt and coin-miners.txt in the root directory and debounce.json not meaningfully separated from ABP-format lists.

It'd be good to move ABP lists into a subfolder of brave-lists, or perhaps to rename brave-lists and move debounce.json & clean-urls.json elsewhere.

Note that we will also need to update brave-core-crx-packager and other repos which depend on the URLs of lists in this repo.

Reference: #965 (comment)

[antonok-edm]

We're also planning on moving this repo to https://github.com/brave/lists, since the repo name is slightly misleading now.