components: Implement automatic deduplicating of text format type sugar

Currently a module textually represented like so:

```wasm
(component
(import "" (func))
(import "" (func))
)
```

dumps as:

```
0x0 | 00 61 73 6d | version 65546 (Component)
| 0a 00 01 00
0x8 | 01 05 | type section
0xa | 02 | 2 count
0xb | 7f | [type 0] Interface(Primitive(Unit))
0xc | 4c 00 00 | [type 1] Function(ComponentFuncType { params: [], result: Type(0) })
0xf | 02 03 | import section
0x11 | 01 | 1 count
0x12 | 00 01 | [func 0] ComponentImport { name: "", ty: 1 }
0x14 | 01 05 | type section
0x16 | 02 | 2 count
0x17 | 7f | [type 2] Interface(Primitive(Unit))
0x18 | 4c 00 02 | [type 3] Function(ComponentFuncType { params: [], result: Type(2) })
0x1b | 02 03 | import section
0x1d | 01 | 1 count
0x1e | 00 03 | [func 1] ComponentImport { name: "", ty: 3 }
```

Here two function types are added (type 1 and type 3 above) but instead only one should be added. There are annotated FIXME annotations for this in the codebase where hashing support needs to be added.