Add a fluid style go api

Maybe this is just me, but I would really love a fluid/functional style API for the bundle library. Most of these transformations feel like map/filter/reduce/transform, so it seems like it could work well.

```go
fluid.FluidBundle(bundle).
Filter().
Assert(fn).
TransformImages().
FindComponent(cname).
Get()
-> Returns component
```

The issue names no files, tests, or entry points. Start by reviewing the bundle library's existing transformation API and determine how a fluent sequence could fit it; done would require an agreed scope and a working chain covering the requested transformations and component result.

Written by the indexing model from the issue text.