profiles: improve anki and foliate & add new profiles

[amano-kenji]

On gentoo linux, there is /usr/bin/foliate instead of /usr/bin/com.github.johnfactotum.Foliate

[kmk3]

There are too many unrelated changes in the same PR, which makes review harder.

Split the changes into more PRs (this PR can be the anki one):

• profiles: anki: fix dark mode detection & misc changes
• profiles: foliate: add foliate to private-bin
• New profile: aria2c/aria2rpc
• New profile: hledger/hledger-ui
• New profile: cryptonote-wallet-cli / monero-wallet-cli

Unless there is something in common about some of these, they should probably
also get 1 PR each:

• New profile: buku
• New profile: ncmpcpp
• New profile: nsxiv
• New profile: pyradio
• New profile: tremc

As for a basic overall review:

• The new profiles are missing the description and the rest of the comments
  that go before quiet (see profile.template /
  redirect_alias-profile.template)
• The new profiles are missing the # Allow ... comment that goes before each
  include allow- entry (see profile.template)
• Add notpm to the new profiles if they do not use TPM devices (which
  probably applies to all of them except for maybe the crypto ones) (see
  profile.template)

Also, add links to the homepage (or source code) of each program in the commit
message and PR. For example, I have no idea what buku and tremc are
supposed to be.