REF: Refactor utils

[VinzentRisch]

solves #99

• Added new utils and test_utils that house all actions that are used by card and amrfinderplus subpackages.
• Refactor of all transformers to metadata to make it easier to create transformers for amrfinderplus formats.
• Added create_df and combine_dataframes that get used by all transformers to metadata.
• Removed own test plugin base in card/types/tests/test_types_formats_transformers.py and replaced with base from qiime.

Set up an environment

https://github.com/bokulich-lab/q2-amr?tab=readme-ov-file#installation

Run it locally

1. First, clone the repo and checkout the PR branch:

git clone https://github.com/bokulich-lab/q2-amr.git
cd q2-amr
git fetch origin pull/101/head:pr-101
git checkout pr-101
pip install -e .