extract AbstractListsRewriter from Lists

The list-block CallWriter rewriter mixed two concerns: a shared state
machine that turns flat list_open / list_item / list_close calls into
the nested listu_

extract AbstractListsRewriter from Lists

The list-block CallWriter rewriter mixed two concerns: a shared state
machine that turns flat list_open / list_item / list_close calls into
the nested listu_open / listo_open / listitem / listcontent shape
the renderers expect, and a syntax-specific marker parser that maps
the captured indent + marker text to depth/type.

Hoist the state machine onto a new abstract base class
AbstractListsRewriter; Lists keeps only its DokuWiki marker parser
(`*` unordered, `-` ordered, 2-space-per-level indent). The upcoming
GfmLists will share the same base class with its own GFM marker
parser.

The interpretSyntax contract changes shape:

protected function interpretSyntax($match, &$type): int
to
abstract protected function interpretSyntax(string $match): array;
// returns ['depth' => int, 'type' => 'u'|'o', 'start'? => int]

The optional `start` key carries the first ordered item's number for
syntaxes that support it (GFM); DokuWiki omits it and gets the
default of 1. Plugins subclassing Lists that override interpretSyntax
need to update — known affected: creole, markdowku, mediasyntax (per
codesearch.dokuwiki.org). The migration is mechanical: replace the
by-ref $type assignment and int return with an associative-array
return.

The protected listStart / listOpen / listEnd dispatch methods on the
old Lists are gone (renamed handleListOpen / handleListItem /
handleListClose on the base class), but no plugin in the ecosystem
overrides those, only interpretSyntax.

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deduplicate finalise() across rewriter subclasses

Move the identical finalise() logic into AbstractRewriter with an
abstract getClosingCall() method. Lists, Quote, Table, Preformatted
and Nest each

deduplicate finalise() across rewriter subclasses

Move the identical finalise() logic into AbstractRewriter with an
abstract getClosingCall() method. Lists, Quote, Table, Preformatted
and Nest each provide their closing call name instead of duplicating
the full method.

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updated rector and applied it

Use str_starts_with/str_ends_with

code style: operator spacing

codestyle adjustments: function declaration braces/spaces

apply PSR-12 constant visibility rule

PSR-12 says constants need their visibility declared from PHP 7.1
onwards

Apply rector fixes to inc/Parsing

Fix accessing calls

Some plugins need access to the handler (and rewriter) calls. One
example is the do plugin.

This adds some accessing methods to the callWriter objects, ensures
$calls can be acc

Fix accessing calls

Some plugins need access to the handler (and rewriter) calls. One
example is the do plugin.

This adds some accessing methods to the callWriter objects, ensures
$calls can be accessed and removes some duplicate code by introducing an
abstract base class.

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moved all parsing related namespaces to their own