refactor+fix(gossip): update naming in active set and fix table trim condition

[yewman]

Overview

1. Rename pruned_peers to peers in ActiveSet
2. Fix shouldTrim method in GossipTable so we trim when 90% capacity is reached, not 110%
3. Address TODO in src/bincode/bincode.zig
4. Update imports in modified files to fit new import style guide (draft here):

Import Style Guide (Draft)
Declare imports in the following groups, separated by a newline.

1. group @import's
2. group namespace aliases
3. group struct aliases
4. group function aliases
5. group constant aliases

If it improves clarity, split group's into Sig and External imports / aliases.

Namespaces and Aliases
In my mind, it would be useful to establish some sort of convention for how we alias namespaces, structs, methods etc. For example in service.zig we access structs and methods from src/gossip/data.zig using a mix of approaches. Whilst this is not a big issue, in my opinion it does impact readability so is something to think about.

One approach could be to aim to import structs, methods, constants, etc into the local namespace, and only use namespace aliases when there is a conflict or it improves readability by providing context. For example, importing ContactInfo into the local namespace should never be a problem, but perhaps when using Counter from prometheus in a seperate module prometheus.Counter may be more informative.

Anyway these are just some thoughts which popped up while updating the imports!

[0xNineteen]

one small thing - otherwise lgtm

[0xNineteen]

few small things - then should be good

[0xNineteen]

lgtm - awesome first pr 🚀

[0xNineteen]

just responding to your comment - then should be good for merge

[0xNineteen]

lgtm - great first pr 🔥