feat: added wrapper for seqtk seq subcommand

bio/seqtk/seq/environment.yaml

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+channels:
+  - bioconda
+  - conda-forge
+dependencies:
+  - seqtk ==1.3

bio/seqtk/seq/meta.yaml

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+name: seqtk-seq
+description: |
+  Common transformations of FASTA/Q using seqtk
+authors:
+  - William Rowell
+input:
+  - fastn file (can be gzip compressed)
+output:
+  - fastn file (gzip compressed)

bio/seqtk/seq/test/Snakefile

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+rule seqtk_seq_fastq_to_fasta:
+    input: '{prefix}.fastq'
+    output: '{prefix}.fasta'
+    params:
+        extra = '-A'
+    wrapper:
+        "master/bio/seqtk/seq"

bio/seqtk/seq/test/a.fastq

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+@1
+ACGGCAT
++
+!!!!!!!

bio/seqtk/seq/wrapper.py

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+"""Snakemake wrapper seqtk seq subcommand"""
+
+__author__ = "William Rowell"
+__copyright__ = "Copyright 2020, William Rowell"
+__email__ = "wrowell@pacb.com"
+__license__ = "MIT"
+
+
+from snakemake.shell import shell
+
+
+extra = snakemake.params.get("extra", "")
+log = snakemake.log_fmt_shell(stdout=False, stderr=True)
+
+shell(
+    "(seqtk seq {extra} {snakemake.input} > {snakemake.output}) {log}"
+)
+