Giotto import functionalities for Xenium datasets. This function creates a `XeniumReader` instance that has convenient reader functions for converting individual pieces of Xenium data into Giotto-compatible representations.
These functions should have all param values provided as defaults, but can be flexibly modified to do things such as look in alternative directories or paths
importXenium(xenium_dir = NULL, qv_threshold = 20)
`XeniumReader` object