Add bilingual manual and localized docs routes

doc/manual/source/language/naming.md

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+# Naming Conventions
+
+Identifier capitalization has no language-defined meaning.
+Values, constraints, schemas, and derived configurations are all expressions of the same kind.
+
+For readability, the following conventions are recommended:
+
+- Object values: `lower_snake`
+- Functions: `lowerCamel`
+- Primitives, schemas, and abstract constraints: `UpperCamel`
+
+```dcdl
+Port = Int & >= 1;
+Service = { port = Port; };
+service = { port = 8080; } as Service;
+mkService = (port: Port) => { port = port; };
+```