chore: some improvement as description

[dimaslanjaka]

Needed in other PR

• https://github.com/hexojs/hexo/pull/5209

Included previous PR

• https://github.com/hexojs/hexo-util/pull/301
• https://github.com/hexojs/hexo-util/pull/307
• https://github.com/hexojs/hexo-util/pull/308

fix: no explicit any

affects: lib/pattern.ts

feat(PatternMatchResult): add boolean type

affects: lib/pattern.ts

see usage as boolean:

• https://github.com/dimaslanjaka/hexo/blob/4ba63bc65d05d231fd1db1053013e2ae71661a70/lib/plugins/processor/common.ts#L29-L32
• https://github.com/dimaslanjaka/hexo/blob/4ba63bc65d05d231fd1db1053013e2ae71661a70/lib/theme/processors/source.ts#L25-L32

[coveralls]

coverage: 95.067% (-0.4%) from 95.422% when pulling f369d6e4fcb058e3c9566dc22d208ff8507c44f4 on dimaslanjaka:master into 7dda4e5bf3f8391e3837d169d2164ab125d011cf on hexojs:master.