Allow seeding for PINN

[codecov[bot]]

Codecov Report

Base: 29.27% // Head: 29.27% // No change to project coverage :thumbsup:

Coverage data is based on head (3ba5d53) compared to base (2cc0113). Patch coverage: 88.88% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #144 +/- ## ======================================= Coverage 29.27% 29.27% ======================================= Files 16 16 Lines 895 895 ======================================= Hits 262 262 Misses 633 633 ``` | [Impacted Files](https://codecov.io/gh/YichengDWu/Sophon.jl/pull/144?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Shambles) | Coverage Δ | | |---|---|---| | [src/compact/NeuralPDE/utils.jl](https://codecov.io/gh/YichengDWu/Sophon.jl/pull/144/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Shambles#diff-c3JjL2NvbXBhY3QvTmV1cmFsUERFL3V0aWxzLmps) | `0.00% <0.00%> (ø)` | | | [src/compact/NeuralPDE/pinn\_types.jl](https://codecov.io/gh/YichengDWu/Sophon.jl/pull/144/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Shambles#diff-c3JjL2NvbXBhY3QvTmV1cmFsUERFL3Bpbm5fdHlwZXMuamw=) | `87.17% <100.00%> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Shambles). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Shambles)

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