gdal_translate: add page (#8272)

pages/common/gdal_translate.md

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+# gdal_translate
+
+> Convert raster data between different formats.
+> More information: <https://gdal.org/programs/gdal_translate>.
+
+- Convert a raster dataset to JPEG format:
+
+`gdal_translate -of {{JPEG}} {{path/to/input.tif}} {{path/to/output.jpeg}}`
+
+- Assign a projection to a raster dataset:
+
+`gdal_translate -a_srs {{EPSG:4326}} {{path/to/input.tif}} {{path/to/output.tif}}`
+
+- Reduce the size of a raster dataset to a specific fraction:
+
+`gdal_translate -outsize {{40%}} {{40%}} {{path/to/input.tif}} {{path/to/output.tif}}`
+
+- Convert a GeoTiff to a Cloud Optimized GeoTiff:
+
+`gdal_translate {{path/to/input.tif}} {{path/to/output.tif}} -of COG -co COMPRESS=LZW`