maintainer omnibus: testing, fuzz, plugins, documentation As softfreeze is fast approaching I thought it would be work combining my various trees into an omnibus series to ease the review and merging. The testing updates exposed a number of latent leaks that confused the oss-fuzz jobs (hence the test-fuzz addition to help debug that). This also includes some minor plugin updates and finally some documentation updates that clean-up and expose the QOM and QDEV APIs which are so core to emulating anything in QEMU. v2 - applied a bunch of review tags - added missing doc suggestions from Paolo - tweaked the plugin fix for CI The following patches need review: - qemu-keymap: properly check return from xkb_keymap_mod_get_index