Re-work config file

Add an explicit section for tests that would be a dictionary so that an example config would look like:

```
tests:
test_h265_color:
app: ffmpeg
comparisontest:
- testtype: idiff
- testtype: assertresults
tests:
- assert: less
value: max_error
less: 0.00195
description: h265 color tests of different pix-fmts
encoding_template: ffmpeg -y {input_args} -i "{source}" {encoding_args}
-y "{outfile}"
name: test_h265_color
sources:
- ../sourceimages/chip-chart-1080-noicc.png.yml
- ../sourceimages/chip-chart-1080-16bit-noicc.png.yml
- ../sourceimages/smptehdbars_16.png.yml
suffix: .mp4
wedges:
yuv444p10lex265: &basex265
-c:v: libx265
-vf: '"scale=in_color_matrix=bt709:out_color_matrix=bt709"'
-color_primaries: bt709
-color_range: tv
-color_trc: bt709
-colorspace: bt709
-pix_fmt: yuv444p10le
-preset: placebo
-x265-params: lossless=1
-tag:v: hvc1
-profile:v: main444-10

yuv444p12lefullx265:
<< : *basex265
-vf: '"scale=in_range=full:in_color_matrix=bt709:out_range=full:out_color_matrix=bt709"'
-color_range: pc

videotoolbox_h265_bgra:
<< : *basex265
-c:v: hevc_videotoolbox
#-vf: '"scale=in_range=full:in_color_matrix=bt709:out_range=full:out_color_matrix=bt709"'
-color_range: pc
-colorspace: rgb
-profile:v: main
-pix_fmt: bgra

test_h265_color_420:
app: ffmpeg
comparisontest:
- testtype: idiff
compare_image: ../sourceimages/chip-chart-1080-16bit-noicc-yuv420p10le.png
- testtype: assertresults
tests:
- assert: less
value: max_error
less: 0.00195
description: h265 color tests of different pix-fmts
encoding_template: ffmpeg -y {input_args} -i "{source}" {encoding_args}
-y "{outfile}"
name: test_h265_color
sources:
- ../sourceimages/chip-chart-1080-16bit-noicc.png.yml
suffix: .mp4
wedges:
yuv420p10le: &basex265
-c:v: libx265
-vf: '"scale=in_color_matrix=bt709:out_color_matrix=bt709"'
-color_primaries: bt709
-color_range: tv
-color_trc: bt709
-colorspace: bt709
-pix_fmt: yuv420p10le
-preset: placebo
-x265-params: lossless=1
-tag:v: hvc1
-profile:v: main444-10

reports:
description: This is testing h265 color encoding.
directory: hevc-color-encode
name: hevc-color-tests
templatefile: colorweb.html.jinja
title: Ffmpeg encoding guide tests

```

I might also remove some of the duplicate info, such as the name, and in the reports, the directory and name fields.

Use a configuração de exemplo na issue como a estrutura-alvo. Revise as seções tests e reports propostas e determine quais campos duplicados, incluindo name, directory e report name, devem permanecer. Considera-se concluído quando a estrutura de configuração é consistente e o exemplo reflete com precisão o formato compatível.

Escrita pelo modelo de indexação a partir do texto da issue.