ref(perfetto): Rework perfetto conversions

[Dav1dde]

No (or very minimal) functional changes intended.

• Better de-duplication, slightly more efficient through HashTable use for images, frames and stacks, instead of just frames.
• Slightly less allocations, again through HashTable referencing strings already allocated elsewhere.
• Introduction of builder types, used to build up our own sample format.
• Introduction of cache types, used just to cache data for a single sequence id
• InternTables is no longer also abused for caches.
• More modules to have proper type visibility, important for a follow-up to introduce better/stricter limits.
• Rework of most of the Rust code to actually make it Rusty not Codex Rust.
• Introduces a StackId and FrameId new-type wrapper instead of passing indices around, may prevent a bug at some point.
• Removes a bunch of useless extra intermediate types (like ResolvedFrame)
• Also happens to fix the precision for some timestamps, less precision loss (even if ms precision is enough).
• Caches are retained until there is a clear flag, instead of always clearing.

And yes there are some off-by-ones when it comes to the limits, they don't matter, if it messes with someone's OCD, I can fix them.