Spatial reconstruction mode PCA + STFT

[Airdoggo]

We could do a spatial reconstruction mode using PCA + STFT on top of the SSA + STFT one. To test with OCT data.

[Sefray]

@micatlan Is the meaning of this imported issue to:

• create a new space transform : SSA STFT PCA STFT ?
• have a check box adding (or not) PCA STFT when SSA STFT is active ?
• else ?