chore: un phpstand de niveau 3

.gitattributes

-* text=auto !eol
-lang/formidable_mailsubscribers_fr.php -text
-lang/paquet-formidable_mailsubscribers_fr.php -text
-/paquet.xml -text
-prive/themes/spip/images/formidable_mailsubscribers-64.png -text
-traiter/mailsubscribe.php -text
-traiter/mailsubscribe.yaml -text
+/phcs.xml.dist export-ignore
+/phpstan.neon.dist export-ignore
+/phpstan-baseline.neon export-ignore

phpstan-baseline.neon

+parameters:
+	ignoreErrors:
+		-
+			message: "#^Function _request not found\\.$#"
+			count: 2
+			path: formidable_mailsubscribers_pipelines.php
+
+		-
+			message: "#^Function include_spip not found\\.$#"
+			count: 1
+			path: formidable_mailsubscribers_pipelines.php
+
+		-
+			message: "#^Function _T not found\\.$#"
+			count: 3
+			path: traiter/mailsubscribe.php
+
+		-
+			message: "#^Function _request not found\\.$#"
+			count: 4
+			path: traiter/mailsubscribe.php
+
+		-
+			message: "#^Function charger_fonction not found\\.$#"
+			count: 1
+			path: traiter/mailsubscribe.php
+
+		-
+			message: "#^Function include_spip not found\\.$#"
+			count: 5
+			path: traiter/mailsubscribe.php
+
+		-
+			message: "#^Function lire_config not found\\.$#"
+			count: 1
+			path: traiter/mailsubscribe.php
+
+		-
+			message: "#^Function mailsubscribers_listes not found\\.$#"
+			count: 1
+			path: traiter/mailsubscribe.php
+
+		-
+			message: "#^Function singulier_ou_pluriel not found\\.$#"
+			count: 1
+			path: traiter/mailsubscribe.php
+
+		-
+			message: "#^Function sql_getfetsel not found\\.$#"
+			count: 1
+			path: traiter/mailsubscribe.php
+
+		-
+			message: "#^Function sql_quote not found\\.$#"
+			count: 1
+			path: traiter/mailsubscribe.php

phpstan.neon.dist

+# phpstan.neon.dist
+includes:
+	- phpstan-baseline.neon
+parameters:
+	paths:
+		- .
+	excludePaths:
+		analyseAndScan:
+			- lang
+	level: 3