Post-v0.1 adoption packaging starters

[ehsanestaji]

Summary

• Add post-v0.1 adoption docs covering positioning, evidence, packaging, and benchmark evidence to collect next.
• Add a MultiQC plugin starter that parses fastaguard_mqc.json and exposes a multiqc.modules.v1 entry point.
• Add a Bioconda recipe starter, MIT license file, and Python adoption asset tests wired into CI.

Validation

• cargo fmt --check
• cargo test --locked
• cargo clippy --locked --all-targets --all-features -- -D warnings
• python3 -m unittest discover tests/python -v
• python3 -m py_compile integrations/multiqc/src/fastaguard_multiqc/__init__.py integrations/multiqc/src/fastaguard_multiqc/parser.py integrations/multiqc/src/fastaguard_multiqc/multiqc_module.py tests/python/test_adoption_assets.py
• workflow YAML parse via Ruby
• git diff --check
• trailing whitespace check
• benchmark smoke with scripts/benchmark_large_fasta.py

Notes

• Bioconda submission still needs a public source archive and real SHA256 in packaging/bioconda/meta.yaml.
• The MultiQC plugin is a starter; FastaGuard custom-content output remains the stable v0.1 path.