chore: change list output

[notnmeyer]

simpler, maybe better looking output

➜ daylog list --project test
2023/09/29/log.md
2023/10/02/log.md
2023/10/13/log.md
2023/11/03/log.md
2023/11/09/log.md
2023/11/10/log.md
2023/11/11/log.md
2023/11/13/log.md
2023/11/21/log.md
2023/11/22/log.md
2023/11/26/log.md
2024/01/03/log.md
2024/01/21/log.md
2024/01/22/log.md
2024/01/24/log.md
2024/07/01/log.md
2024/07/03/log.md
2024/07/09/log.md