share build cache when building rust API and the example project

[russell-liu]

No description provided.

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (520d496) 90.29% compared to head (b0f5959) 90.29%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1995   +/-   ##
=======================================
  Coverage   90.29%   90.29%           
=======================================
  Files         883      883           
  Lines       32411    32411           
=======================================
+ Hits        29265    29267    +2     
+ Misses       3146     3144    -2     

see 1 file with indirect coverage changes

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[benjaminwinger]

From the logs, it looks like it's still using separate build directories. I think that's because the example doesn't use the arrow feature, so it then separately builds kuzu without the arrow feature to use with the example.

What we could do is have the example build require the arrow feature (or give it a feature that depends on the kuzu crate's arrow feature). So why don't we merge this for now, and I'll add an arrow feature to the example in a separate PR.