Successor of failed approach of #199

Work:

• Using futures joiners within resolver layer traits
• Refactor StreamOrFut and its sub-futures together - This ends up being hard cause Future vs Stream
• Replacing Stream with custom trait
• Solution for batch decoding using framing -> working w/ Typescript
• Solution for batch encoding using framing -> working w/ Typescript
• Introduce ContentType & ContentTypes trait + generics based on Rspc
• Using custom enum for Poll so custom values can be yielded through the chain (both up and down)
• Remove the input: Value arg through layer system

closes #173