RAF: extract more details when printing structure

[kmilos]

Going by https://libopenraw.freedesktop.org/formats/raf/ some bytes after the first meta and CFA offset and length were unknown. @hfiguiere

However, I think these are to describe the file layout when the RAF has two sub-images (like the ones from EXR sensors), so I posit it is a specification of some interleaving scheme w/ skip? (haven't seen anything other than 0), chunk size, and stride....

For the FinePix F700 sample from RPU, this now outputs:

STRUCTURE OF RAF FILE: Fujifilm - FinePix F700 - double width 16-bit unpacked little-endian (4_3).RAF
   Address |    Length | Payload
         0 |        16 |        magic : FUJIFILMCCD-RAW
        16 |         4 |        data1 : 0201
        20 |         8 |        data2 : FF390101
        28 |        32 |       camera : FinePix F700
        60 |         4 |      version : 0264
        64 |        20 |      unknown : ...................
        84 |         4 |  JPEG offset : 148
        88 |         4 |  JPEG length : 482850
        92 |         4 | meta offset1 : 483000
        96 |         4 | meta length1 : 2148
       100 |         4 |  CFA offset1 : 487296
       104 |         4 |  CFA length1 : 6382592
       108 |         4 |    CFA skip1 : 0
       112 |         4 |   CFA chunk1 : 2944
       116 |         4 |  CFA stride1 : 5888
       120 |         4 | meta offset2 : 485148
       124 |         4 | meta length2 : 2148
       128 |         4 |  CFA offset2 : 490240
       132 |         4 |  CFA length2 : 6382592
       136 |         4 |    CFA skip2 : 0
       140 |         4 |   CFA chunk2 : 2944
       144 |         4 |  CFA stride2 : 5888
       148 |    482850 |    JPEG data : ....%"Exif..II*
    483000 |      2148 |   meta data1 : ...).....x......
    485148 |      2148 |   meta data2 : ...).....x......
    487296 |   6382592 |    CFA data1 : ...............
    490240 |   6382592 |    CFA data2 : ...............

Note how the offset of the 2nd CFA data payload is one CFA chunk size of 2944 after the 1st one, giving the hint about interleaved chunks.

NB: "CFA length" seems to be the effective one, after deinterleaving.

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Merging #2824 (8979e51) into main (3e977c5) will decrease coverage by 0.11%.
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@@            Coverage Diff             @@
##             main    #2824      +/-   ##
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- Coverage   64.00%   63.89%   -0.11%     
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  Files         103      103              
  Lines       22324    22361      +37     
  Branches    10827    10861      +34     
==========================================
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Files	Coverage Δ
src/rafimage.cpp	17.15% <0.00%> (-3.15%)	⬇️

[kmilos]

Thanks for all the changes @kevinbackhouse