SPIRVIntrinsics 0.5 support

[christiangnrd]

Succeeds #633

[christiangnrd]

Metal.jl failures are will be resolved once #630 is merged.

Other failures are all pocl compilation failures.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 51.24%. Comparing base (f1b7875) to head (4b10601).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/pocl/backend.jl	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            main     #638       +/-   ##
==========================================
+ Coverage   0.00%   51.24%   +51.24%     
==========================================
  Files         20       21        +1     
  Lines       1462     1610      +148     
==========================================
+ Hits           0      825      +825     
+ Misses      1462      785      -677     

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