v0.9.7

Fix/argument handling 20240807 (#7)

* version: -> 0.9.7

* fix: changed argument order in handle_args so that placement of positional arguments does not cause `argument not found` errors (s. #6)
* fix: changed default db format from bed to hmmer
* doc: removed misleading references to db format from readme
* doc: corrected argument types of `annotation_db`, `bwa_index` to positional