feat(04-02): select CLDR and Laravel plural forms with PHP parameters

- Use go-i18n only to pick a category label, then substitute :name/:Name/:NAME
- Treat YAML maps as plurals when all keys are locale CLDR categories
- Parse pipe strings with {n} and [a,b]/[a,*] conditions at catalog load

Co-authored-by: Cursor <cursoragent@cursor.com>

examples/hello/plugins/base/lang/en/lang.yaml

@@ -1,3 +1,8 @@
 greeting: Hello
 labels:
   pluginName: Hello plugin
+albums:
+  one: ":count album"
+  other: ":count albums"
+items: "{0} No items|{1} One item|[2,*] :count items"
+helloName: "hi :name :Name :NAME"

examples/hello/plugins/base/lang/pl/lang.yaml

@@ -1,3 +1,10 @@
 greeting: Cześć
 labels:
   pluginName: Wtyczka Hello
+albums:
+  one: ":count album"
+  few: ":count albumy"
+  many: ":count albumów"
+  other: ":count albumu"
+posts: ":count wpis|:count wpisy|:count wpisów|:count wpisu"
+helloName: "cześć :name :Name :NAME"