rename `draft` to `authordraft`

See #23, release log:

• 245006d by @yegor256: #23 no cat
• 1ee2dd2 by @yegor256: #23 hypdoc
• 4de244c by @yegor256: #23 cat
• d9162c8 by @yegor256: #23 doc
• 0492d0c by @yegor256: #23 rultor
• c9f4987 by @yegor256: #23 draft renamed to authordra...
• 7121e37 by @yegor256: #23 eols
• 654a02b by @yegor256: #23 license
• 482b6e3 by @yegor256: #23 gha
• dd0a118 by @yegor256: markdown lint
• 0dfc0d2 by @renovate[bot]: Update teatimeguest/setup-texl...
• ef07996 by @renovate[bot]: Update actions/checkout digest...
• e4616a0 by @renovate[bot]: Update teatimeguest/setup-texl...
• 3becdd5 by @renovate[bot]: Update teatimeguest/setup-texl...
• 069d3fd by @renovate[bot]: Update actions/checkout digest...
• ee5b463 by @renovate[bot]: Update actions/checkout action...
• 7078913 by @renovate[bot]: Update dependency ubuntu to v2...
• b68b82b by @yegor256: deps
• 569915b by @renovate[bot]: Update teatimeguest/setup-texl...
• b2151f6 by @renovate[bot]: Update teatimeguest/setup-texl...

Released by Rultor 2.0-SNAPSHOT, see build log