Move pages under tldr, lint run.sh, update docs

tldr/dwebp

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# dwebp
+
+> `dwebp` decompresses WebP files into PNG, PAM, PPM or PGM images.
+> Animated WebP files are not supported.
+> More information: <https://developers.google.com/speed/webp/docs/dwebp/>.
+
+- Convert a `webp` file into a `png` file:
+
+`dwebp {{path/to/input.webp}} -o {{path/to/output.png}}`
+
+- Convert a `webp` file into a specific filetype:
+
+`dwebp {{path/to/input.webp}} -bmp|-tiff|-pam|-ppm|-pgm|-yuv -o {{path/to/output}}`
+
+- Convert a `webp` file, using multi-threading if possible:
+
+`dwebp {{path/to/input.webp}} -o {{path/to/output.png}} -mt`
+
+- Convert a `webp` file, but also crop and scale at the same time:
+
+`dwebp {{input.webp}} -o {{output.png}} -crop {{x_pos}} {{y_pos}} {{width}} {{height}} -scale {{width}} {{height}}`
+
+- Convert a `webp` file and flip the output:
+
+`dwebp {{path/to/input.webp}} -o {{path/to/output.png}} -flip`
+
+- Convert a `webp` file and don't use in-loop filtering to speed up the decoding process:
+
+`dwebp {{path/to/input.webp}} -o {{path/to/output.png}} -nofilter`