Front matter with metadata for index.txt

[KyrietS]

Example

---
total_size: 119M # Other units: B, K, M, G
aliases:
  a_1: "aaa"
  a_2: "bbb"
  a_3: "ccc"
---
2023-06-24_17.48 \\?\C:\foo
2023-06-24_17.48 \\?\C:\foo\bar.txt

Aliases will be used for a files which paths are too long to be stored explicitly inside "files". Instead, alias will be generated for every file like this and they will be places in other place.

But... maybe this front-matter is a silly idea... I can just measure the weight of a snapshot every time I do mizeria list. Aliases can be saved in another file, e.g. aliases.txt