Add recipe for spechla 1.0.9

[jonasscheid]

Add new recipe for SpecHLA v1.0.9.

SpecHLA enables full-resolution HLA typing from various sequencing data types including WGS, WES, RNA-seq, and long-read sequencing.

Build

• Compiles two C++ components (SpecHap, ExtractHAIRs) against conda-provided htslib, arpack, and zlib
• Installs scripts and HLA reference database to $PREFIX/share/spechla/
• Builds bowtie2 indexes at install time
• Installs wrapper scripts (spechla, spechla-extract-hla-reads, spechla-long-read, spechla-assembly, spechla-loh) to $PREFIX/bin/

Test

• Verifies spechla -h runs and prints expected output
• Checks compiled binaries (SpecHap, ExtractHAIRs) are on PATH
• Verifies database directories are installed

[jonasscheid]

@BiocondaBot fetch-artifacts