**Use case**

This works:

```
SELECT * FROM hits_100m_obfuscated INTO OUTFILE 'hits.csv' FORMAT CSV
```

But I want this:

```
SELECT * FROM hits_100m_obfuscated INTO OUTFILE 'hits.csv'
```

**Describe the solution you'd like**

Every format can register file extension(s) in format factory.
If format is not specified explicitly, we can detect it automatically by file extension.
It should work for compressed files `hits.csv.gz` as well.

The following extensions should be supported at least:
csv, tsv, parquet, orc, native, json, ndjson, xml, md, avro

**Addition details**

Let's also support omitting the format argument for `file`, `url`, `s3`, `hdfs` table functions. 
const String & name,
        ReadBuffer & buf,
        const Block & sample,
        ContextPtr context,
        UInt64 max_block_size,
        const std::optional<FormatSettings> & format_settings = std::nullopt) const;
    
    OutputFormatPtr getOutputFormatParallelIfPossible(
        const String & name,
        WriteBuffer & buf,
        const Block & sample,
        ContextPtr context,
        WriteCallback callback = {},
        const std::optional<FormatSettings> & format_settings = std::nullopt) const;
    OutputFormatPtr getOutputFormat(
        const String & name,
        WriteBuffer & buf,
        const Block & sample,
        ContextPtr context,
        WriteCallback callback = {},
        const std::optional<FormatSettings> & _format_settings = std::nullopt) const;
    String getContentType(
        const String & name,
        ContextPtr context,
        const std::optional<FormatSettings> & format_settings = std::nullopt) const;
    SchemaReaderPtr getSchemaReader(
        const String & name,
        ReadBuffer & buf,
        ContextPtr context,
        const std::optional<FormatSettings> & format_settings = std::nullopt) const;