Extend tiling/floating criteria with optional auto/user values (#4006)

The default `tiling` and `floating` behavior is preserved and matches
both cases.

Adds a new handler to `remanage_window` on A_I3_FLOATING_WINDOW change.

Mainly in order to `run_assignments`, this makes `for_window [floating]`
directives to work for windows which where initially opened as tiling.
Now, when floating is enabled, `for_window` will trigger correctly. Same
applies to `for_window [tiling]`.

The obvious solution of `run_assignments` after
`floating_{enable,disable}` doesn't work because `run_assignments`
modifies the parser state in src/assignments.c:51.

Fixes #3588

Co-Authored-By: Michael Stapelberg <michael@stapelberg.de>

generate-command-parser.pl

@@ -218,6 +218,8 @@ for my $state (@keys) {
             # quote of the literal. We can do strdup(literal + 1); then :).
             $token_name =~ s/'$//;
         }
+        # Escape double quotes:
+        $token_name =~ s,",\\",g;
         my $next_state = $token->{next_state};
         if ($next_state =~ /^call /) {
             ($call_identifier) = ($next_state =~ /^call ([0-9]+)$/);