feat: add ability to create map tiles from SICD images

[edparris]

This change adds the ability to create map tiles from SAR images with complex pixel values. The changes to the GDALTileFactory include updates to convert the 2-band phase/amplitude SICD imagery into an 8-bit per pixel single band imagery meant for human review. This is similar to the dynamic range adjustment normalization applied to electro-optical imagery but it differs in that multiple bands are being combined and normalized to produce a single output image. The calculations in create_orthophoto_tile were also updated to provide a better elevation estimations and more consistent mapping of image pyramid level to map tile resolution. These changes will improve the map tiles generated for all sensor types but the effect was particularly noticeable on the test SAR imagery.

Unit tests have been updated to cover both SICD and SIDD imagery (SIDD already worked but was untested). Manual integration tests were completed to ensure that the results rendered properly in a tile server visualized by a STAC browser. (see images below)

Manual Test Example 1: A SICD image available from AWS's open data program overlaid on a map.

Manual Test Example 2: EO image tiles showing no regression from changes made to support SICD.

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[batzela]

Looks good!