Flag the unverified spectrum wavelength axis; keep the fixture generator

The linear 380-1050 nm axis gives spectrum chromaticities 0.09-0.13 (xy)
away from the instrument's own x, y, so TM-30 and spd.csv inherit an axis
error until it is confirmed. tools/make_fixtures.py regenerates the golden
data from the python-final driver. The release profile moves to the
workspace that builds the binary.

Cargo.toml

@@ -34,5 +34,3 @@ ctrlc = { version = "3.4", optional = true }
 [dev-dependencies]
 serde_json = { version = "1", features = ["preserve_order"] }
 
-[profile.release]
-strip = true