feat: bcf: adds translate to Record so we don't need a writer

[brentp]

this de-couples the bcf_translate functionality from the writer.

[coveralls]

Pull Request Test Coverage Report for Build 20387251497

Details

• 0 of 5 (0.0%) changed or added relevant lines in 1 file are covered.
• 66 unchanged lines in 9 files lost coverage.
• Overall coverage decreased (-0.1%) to 81.749%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/bcf/record.rs	0	5	0.0%

Files with Coverage Reduction	New Missed Lines	%
src/bam/mod.rs	1	83.77%
src/bam/header.rs	2	81.36%
src/bam/ext.rs	3	91.88%
src/bcf/mod.rs	3	78.28%
src/bam/buffer.rs	4	53.85%
src/bcf/record.rs	4	81.69%
src/bcf/buffer.rs	5	62.32%
src/bam/record_serde.rs	12	82.12%
src/bam/record.rs	32	75.6%

Totals
Change from base Build 20368714287:	-0.1%
Covered Lines:	2786
Relevant Lines:	3408

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💛 - Coveralls