Implement compile-time caching for Scala 3

[neko-kai]

We use caching to speed up LightTypeTag creation on Scala 2, we might want to port this technique to Scala 3 implementation also.

We can also Scala 2 improve Scala 2 caching, e.g. right now we cache individual AbstractReference's, but we don't cache basesDb or InheritanceDb (or we could cache the entire serialized LTT instead)

[jdegoes]

/bounty $250

[algora-pbc]

💎 $250 bounty • ZIO

Steps to solve:

1. Start working: Comment /attempt #350 with your implementation plan
2. Submit work: Create a pull request including /claim #350 in the PR body to claim the bounty
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Attempt	Started (GMT+0)	Solution
🔴 @asr2003	Nov 8, 2024, 9:52:52 PM	WIP

[asr2003]

/attempt #350

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[pshirshov]

@asr2003 : I'm glad you are willing to attempt solving this, a P/R which I would be happy to accept should include a benchmark proving that the cache actually works and is beneficial.

You may have a look at the current implementation in def makeRef(tpe: Type): AbstractReference.

So, the work on this issue should be done in 3 stages:

1. We should introduce the same caching technique into the Scala 3 macro
2. We should extend both macros in order to cache not just References but full Tags too
3. We should introduce a simple benchmark showing the difference between caching and non-caching modes.

In my opinion, the benchmark is the most cumbersome part.

[algora-pbc]

@asr2003: Reminder that in 7 days the bounty will become up for grabs, so please submit a pull request before then 🙏

[algora-pbc]

The bounty is up for grabs! Everyone is welcome to /attempt #350 🙌