refactor and fix:

- consistent function structure: all functions now mirror their JSON counterparts
	- lydcbor_parse_name() - parses member names with @ and : support
	- lydcbor_get_node_prefix() - handles module prefixes
	- lydcbor_get_snode() - finds schema nodes
	- lydcbor_value_type_hint() - determines value type hints
	- lydcbor_data_check_opaq() - checks if data should be parsed as opaque
	- lydcbor_metadata_finish() - links forward-referenced metadata
	- lydcbor_meta_attr() - parses metadata/attributes
	- lydcbor_parse_any() - handles anydata/anyxml
	- lydcbor_parse_instance_inner() - parses inner nodes
	- lydcbor_parse_instance() - parses single node instances
	- lydcbor_subtree_r() - main recursive parsing function
- using cbor_typeof() consistently to check types instead of multiple cbor_isa_*() calls
- better error handling, null handling and array processing and meta data support and qpaque node support
- introduced LY_VALUE_CBOR format and added all necessary case statements

Author: MeherRushi

src/lcbor.c

@@ -45,36 +45,6 @@ lycbor_token2str(enum cbor_type cbortype)
         return "decimals and special values (true, false, nil, ...)";
     }
 
-    return "";
-}
-
-        return "object";
-    case LYJSON_OBJECT_NEXT:
-        return "object next";
-    case LYJSON_OBJECT_CLOSED:
-        return "object closed";
-    case LYJSON_ARRAY:
-        return "array";
-    case LYJSON_ARRAY_NEXT:
-        return "array next";
-    case LYJSON_ARRAY_CLOSED:
-        return "array closed";
-    case LYJSON_OBJECT_NAME:
-        return "object name";
-    case LYJSON_NUMBER:
-        return "number";
-    case LYJSON_STRING:
-        return "string";
-    case LYJSON_TRUE:
-        return "true";
-    case LYJSON_FALSE:
-        return "false";
-    case LYJSON_NULL:
-        return "null";
-    case LYJSON_END:
-        return "end of input";
-    }
-
     return "";
 }