implemented ADDPART command

ADDPART appends a partition in the SIZE with a partition type and file system

updated debian, added git dependency, bump version

0.6.0 - 2022-02-12

0.5.0 - 2022-01-17

0.4.4 - 2021-11-09

Added
- Bind /sys, allow the usage of docker inside pimod

Bugfix: PARTUUIDs got rewritten by parted

As discussed in Issue #42, parted seems to replace partuuids
in the partition table. The error is well-known but seems not to be
fixed in parted.

Thus parted is replaced by sfdisk, which is an fdisk variant,
to be used in scripts.

Closes #42.

fixed limitedness of PUMP command (closes #40)

PUMP was implemented using dd's bs, which is limited to 2GB. In this fix
the bs is set to fixed 1MB and the block count is calculated and ceiled.

Caveat: Fractions of the block size can not be realized using this
method, but should be not a real problem.

added all .img files to .gitignore / .dockerignore

0.4.0 - 2021-10-07

Added
- WORKDIR command to specify the working directory within the image.

Fixed
- Brought latest version of pimod back to GitHub Marketplace.

0.3.1 - 2021-10-04

Added
- pimod.sh -t: trace executed commands for debugging.
- Started a CHANGELOG.md with prior changes.

Changed
- FROM: document PARTITION_NO argument.

Fixed
- PUMP: fix behavior for bigger partition tables.
- Print Warning on QEMU binary fmt loading err.