v2: Add f32 linalg support

[shinaoka]

Linalg ops (cholesky, svd, qr, eigh, solve, triangular_solve) currently support f64 and Complex64 only.

Add f32 and Complex32 support via FaerLinalg trait implementations.

See tenferro-tensor/src/cpu/linalg/faer_linalg.rs.

[shinaoka]

Status check against main (commit 3676d6c)

tenferro-tensor/src/cpu/linalg/faer_linalg.rs still has only:

• impl FaerLinalg for f64 (line 550)
• impl FaerLinalg for Complex64 (line 937)

No f32 / Complex32 implementations have been added.

Status: no change since filing.