PARQUET-1998: Add LZ_RAW compressed files

The files were generated with Parquet C++.

* `lz4_raw_compressed.parquet` contains the same data as `hadoop_lz4_compressed.parquet`.
* `lz4_raw_compressed_larger.parquet` contains the same data as `hadoop_lz4_compressed_larger.parquet`.

Here are the file contents for `lz4_raw_compressed.parquet`:
```
File Name: parquet-testing/data/lz4_raw_compressed.parquet
Version: 1.0
Created By: parquet-cpp version 1.5.1-SNAPSHOT
Total rows: 4
Number of RowGroups: 1
Number of Real Columns: 3
Number of Columns: 3
Number of Selected Columns: 3
Column 0: c0 (INT64)
Column 1: c1 (BYTE_ARRAY)
Column 2: v11 (DOUBLE)
--- Row Group: 0 ---
--- Total Bytes: 251 ---
--- Total Compressed Bytes: 238 ---
--- Rows: 4 ---
Column 0
  Values: 4, Null Values: 0, Distinct Values: 0
  Max: 1593604801, Min: 1593604800
  Compression: LZ4_RAW, Encodings: PLAIN RLE
  Uncompressed Size: 93, Compressed Size: 85
Column 1
  Values: 4, Null Values: 0, Distinct Values: 0
  Max: def, Min: abc
  Compression: LZ4_RAW, Encodings: PLAIN RLE
  Uncompressed Size: 59, Compressed Size: 58
Column 2
  Values: 4, Null Values: 0, Distinct Values: 0
  Max: 42.125, Min: 7.7
  Compression: LZ4_RAW, Encodings: PLAIN RLE
  Uncompressed Size: 99, Compressed Size: 95
--- Values ---
c0                            |c1                            |v11                           |
1593604800                    |abc                           |42.000000                     |
1593604800                    |def                           |7.700000                      |
1593604801                    |abc                           |42.125000                     |
1593604801                    |def                           |7.700000                      |
```

Here are the partial file contents for `lz4_raw_compressed_larger.parquet`:
```
File Name: parquet-testing/data/lz4_raw_compressed_larger.parquet
Version: 1.0
Created By: parquet-cpp version 1.5.1-SNAPSHOT
Total rows: 10000
Number of RowGroups: 1
Number of Real Columns: 1
Number of Columns: 1
Number of Selected Columns: 1
Column 0: a (BYTE_ARRAY/UTF8)
--- Row Group: 0 ---
--- Total Bytes: 400103 ---
--- Total Compressed Bytes: 380480 ---
--- Rows: 10000 ---
Column 0
  Values: 10000, Null Values: 0, Distinct Values: 0
  Max: ffffe6a0-e0c0-4e65-a9d4-f7f4c176aea2, Min: 00087de7-10df-4979-94cf-79279f9745ce
  Compression: LZ4_RAW, Encodings: PLAIN RLE
  Uncompressed Size: 400103, Compressed Size: 380480
--- Values ---
a                             |
c7ce6bef-d5b0-4863-b199-8ea8c7fb117b|
e8fb9197-cb9f-4118-b67f-fbfa65f61843|
885136e1-0aa1-4fdb-8847-63d87b07c205|
ce7b2019-8ebe-4906-a74d-0afa2409e5df|
a9ee2527-821b-4b71-a926-03f73c3fc8b7|
[...]
```
2 files changed
tree: 3b77c9a42120611504e7bdbb42cb8a4f4afbc43a
  1. bad_data/
  2. data/
  3. LICENSE.txt
  4. README.md
README.md

Testing Data and Utilities for Apache Parquet