CREATE node with multiple labels

**Describe the bug**
Can you confirm AGE is compliant with [opencypher spec v9](https://s3.amazonaws.com/artifacts.opencypher.org/openCypher9.pdf) ?

CREATE (:Label1:Label2) not working

**How are you accessing AGE (Command line, driver, etc.)?**
- [e.g. JDBC]

**What data setup do we need to do?**
Nothing

**What is the necessary configuration info needed?**
Nothing

**What is the command that caused the error?**
```pgsql
SELECT *
FROM cypher('graph', $$
CREATE (n:Label1:Label2)
RETURN n
$$) as (a agtype);
```
```
ERROR: syntax error at or near ":"
```

**Expected behavior**
Create node with multiple labels

**Environment (please complete the following information):**
- Version: [e.g. 1.0.0]