Output the Distribution of Assets in a CSV friendly format

AssetDistribution.cs

using System;
using System.Collections.Generic;
using System.Text;
using UnityEditor;
using UnityEngine;

public class AssetDistribution
{
    [MenuItem("AssetDatabase/GetAssetDistributions")]
    public static void GetAssetDistribution()
    {
        var allAssets = AssetDatabase.GetAllAssetPaths();
        var importerCounts = new Dictionary<Type, int>();
        for(int i = 0; i < allAssets.Length; ++i)
        {
            int count = 0;
            var curImporter = AssetImporter.GetAtPath(allAssets[i]);
            
            if (curImporter == null) 
            {
                Debug.LogWarning($"No importer for asset at path {allAssets[i]}");
                continue;
            }
            
            var importerType = curImporter.GetType();
            importerCounts.TryGetValue(importerType, out count);
            importerCounts[importerType] = count + 1;
        }

        StringBuilder info = new StringBuilder();
        foreach(var curType in importerCounts)
        {
            info.Append(curType.Key);
            info.Append(",");
            info.Append(curType.Value);
            info.AppendLine();
        }
        
        info.Append("Total assets: ");
        info.Append(allAssets.Length);

        Debug.Log(info.ToString());
    }
}