Feat/euv rendering

[Gelu-Nita]

Summary

• fix EUV Python/IDL parity issues and validate same-input same-output behavior
• add typed Python SDK API for MW/EUV rendering with in-memory mode support
• reorganize examples into examples/idl, examples/python/cli, and examples/python/sdk
• document CLI, SDK, GUI viewer, and add a minimal Sphinx docs pipeline

Key fixes

• include missing EBTEL TR arrays in Python EUV inputs (DEM_TR_RUN, DDM_TR_RUN)
• fix EUV output memory-layout unpacking in Python
• make EUV response SAV loading robust to variable-name differences (response vs gxresponse)
• support observer metadata overrides in Python and IDL (DSUN/LONC/B0SUN)

SDK additions

• add gximagecomputing.sdk with typed option/result dataclasses
• add render_mw_maps(...) and render_euv_maps(...)
• support save_outputs=False / write_preview=False for fully in-memory workflows

Examples and docs

• move examples into examples/idl, examples/python/cli, examples/python/sdk
• add sdk_render_mw.py and sdk_render_euv.py
• document gxrender-map-view for MW and EUV
• add lightweight Sphinx docs (make docs-html)

Validation

• built docs successfully (make docs-html)
• smoke-tested CLI and SDK example help commands
• smoke-tested MW and EUV SDK in-memory renders with real test inputs
• verified IDL/Python EUV parity reaches floating-point noise when inputs are matched exactly

[Gelu-Nita]

Rebased this branch onto the current kuznetsov-radio/main and resolved merge conflicts.

Also removed generated docs/_build output from the branch, so only source docs are included.

PR now shows clean mergeability.

[Gelu-Nita]

Follow-up fix pushed: after the examples/ reorganization, the IDL examples (RenderExampleMW.pro, RenderExampleEUV.pro) were still resolving idlcode/ and binaries/ one directory too shallow.

I updated both to resolve paths relative to the repository root, so local example runs/validation workflows continue to work correctly from examples/idl/.