### Description
This PR implements upload functionality for ArcAdapter and improves CRF search.
adapter.rs
First, regarding the CRF search feature, when there is no search query (i.e., on the default page), there was a bug where sorting by added date and other sort options did not work correctly, so the default query was removed. Also, the added-date sort order was reversed, so that was fixed as well.
Next, about the upload feature.
First, in order to create cube_amounts, which stores in JSON the count of each part of the robot contained at the end of the ROBOT_CUBES table, we count—by type—the number of all byte sequences (part IDs) excluding the first 4 bytes (total part count) and excluding the last 4 bytes (coordinates) out of each following 8 bytes, and then create a JSON string where the keys are the part IDs converted to decimal and the values are the counts.
After that, we insert Base64-encoded data into cube_data and colour_data in ROBOT_CUBES, and insert the above JSON string into cube_amounts.
Next, regarding ROBOT_METADATA, the thumbnail URL is set to the internal CDN, and the actual thumbnail data is saved under data/robocraft/thumbnails.
The added date and expiration date are converted to match the same format as the other data before insertion, and the other data is inserted as-is.
arc.rs
If the requested file is not present in the ZIP file, it was changed to scan the JPG files existing in data/robocraft/thumbnails.
package_release.py
Made it so that data/robocraft/thumbnails is created.
### Game
Robocraft
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Reviewed-on: https://git.ngram.ca/OpenJam/rc-servers/pulls/62
Co-authored-by: MaxSignal <kastera58@gmail.com>
Co-committed-by: MaxSignal <kastera58@gmail.com>
