Version 0.15.0 alpha 22

• perf(call): update strkit_rust_ext to 0.12.2 for faster consensus
• feat(call)!: consensus method in JSON output + use best_rep for long TRs
• fix(call): small behaviour glitches in repeat counting
• chore(call): rm unneeded variable assignment
• refact(call): move call_alleles_with_gmm procedure to function

Full Changelog: v0.15.0-alpha.21...v0.15.0-alpha.22