Fix the bug with the interpolation start

[cBournhonesque]

Fixed

• Fixed an issue with the start of interpolation. Anytime we started moving the player, the interpolation would start moving a bit slowly at the beginning. That's because the start tick is really old (last time we received an update for that component) and the end tick is very far. What we do is created a new fake 'confirmed history' tick at roughly end_tick - send_interval_in_ticks so that the interpolation is still done over roughly send_interval

TODO

However there are new issues uncovered with this PR:

• interpolation_tick seems to be not correct at the beginning, and is even bigger than last_received_server_tick! I think there's an issue with how syncing is done at the beginning
• client side prediction has a huge delay at the beginning, probably a similar issue where the prediction_time seems to be set too far in advance? Problem in sync
  ---> all this seems to happen when i spawn both clients at the same time! If i spawn client 1 first, and then client 2 later, everything works fine.
  ---> as time passes, the objective time/prediction time are correcting themselves via speedup/speeddown, but it's weird how the initial time can be very bad.

[codecov-commenter]

Codecov Report

Attention: 17 lines in your changes are missing coverage. Please review.

Comparison is base (f31eb65) 75.51% compared to head (6db2aa8) 75.28%.

Files	Patch %	Lines
lightyear/src/client/interpolation/interpolate.rs	19.04%	17 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #11      +/-   ##
==========================================
- Coverage   75.51%   75.28%   -0.23%     
==========================================
  Files          89       89              
  Lines        4994     5014      +20     
==========================================
+ Hits         3771     3775       +4     
- Misses       1223     1239      +16     

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