fix(debian): move *.list dpkg analyzer to separate analyzer

[DmitriyLewen]

Description

dpkg contains all installed packages in var/lib/dpkg/status file. But installed files for each package are stored invar/lib/dpkg/info/<pkg_name>.list files.
Therefore, when we work with packages at different levels, we can overwrite system files.

e.g.:

FROM Ubuntu
RUN apt install curl -y

— line 1: We parse default installed packages with their system files.
— line 2: install new package. var/lib/dpkg/status will be updated at this layer (curl will be added). Therefore, we find all packages of first layer + curl. But second layer only includes var/lib/dpkg/info/curl.list file, so system files for first layer packages will be overwritten with empty value and we will not include this in report.

This PR moves analyze of *.list files (saving system files for each package) to separate analyzer.
System files will be merged with packages when layers are applied.

before:

➜ trivy -q image -f json --list-all-pkgs nginx | jq '.Results[].Packages[] | select(.ID=="[email protected]") | .InstalledFiles'
null

after:

➜  trivy git:(fix-dpkg/separate-analyzer-for-lists) ./trivy -q image -f json --list-all-pkgs nginx | jq '.Results[].Packages[] | select(.ID=="[email protected]") | .InstalledFiles'
[
  "/etc/adduser.conf",
  "/etc/deluser.conf",
  "/usr/sbin/addgroup",
  "/usr/sbin/adduser",
  "/usr/sbin/delgroup",
  "/usr/sbin/deluser",
  "/usr/share/doc/adduser/NEWS.Debian.gz",
   ...
  "/var/cache/adduser"
]

Related issues

• Close scan image with --list-all-pkgs flag has missing os installed files with in the report #5857

Checklist

• I've read the guidelines for contributing to this repository.
• I've followed the conventions in the PR title.
• I've added tests that prove my fix is effective or that my feature works.
• I've updated the documentation with the relevant information (if needed).
• I've added usage information (if the PR introduces new options)
• I've included a "before" and "after" example to the description (if the PR is a user interface change).

[knqyf263]

@DmitriyLewen I came up with another idea. Could you take a look at #6849?

[knqyf263]

We found a good approach.
#5844