docs(core.config): add documentation for config options (#1512)
* docs(core.config): add documentation for config options
* docs(core.config): remove wrong newline
* docs(core.config): remove trailing whitespace
* docs(core.config): add missing whitespace
* docs(core.config): add disclaimer for core.file_size_limit
* docs(core.config): fix wrong description of the pattern
* docs(core.config): fix wrong description
* docs(core.config): fix wrong description for transitions
* docs(core.config): guide user to drawwhitespace plugin
* docs(core.config): clarify libdecor usage
* docs(core.config): clarify various things
* docs(core.config): clarify more about libdecor support
* docs(core.config): fix missing enum separator
* docs(core.config): remove wayland-specific advice on config.borderless
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