Add show meta

[gingerwizard]

Showing row groups, the compression used, metadata and encoding.

e.g.

docker run -v $PWD/houseprices:/data markhneedham/pq meta /data/house_prices.parquet

File path:  /data/house_prices.parquet
Created by: parquet-cpp version 1.5.1-SNAPSHOT
Properties: (none)
Schema:
message schema {
  required int32 price (INTEGER(32,false));
  required int32 date (INTEGER(16,false));
  required binary postcode1;
  required binary postcode2;
  required int32 type (INTEGER(8,true));
  required int32 is_new (INTEGER(8,false));
  required int32 duration (INTEGER(8,true));
  required binary addr1;
  required binary addr2;
  required binary street;
  required binary locality;
  required binary town;
  required binary district;
  required binary county;
}


Row group 0:  count: 1000000  6.32 B records  start: 4  total(compressed): 6.026 MB total(uncompressed):9.089 MB
--------------------------------------------------------------------------------
           type      encodings count     avg size   nulls   min / max
price      INT32     Z _ R     1000000   1.72 B     0       "100" / "523000000"
date       INT32     Z _ R     1000000   1.77 B     0       "9131" / "19405"
postcode1  BINARY    Z _ R     1000000   0.00 B     0       "0x" / "0x42413131"
postcode2  BINARY    Z _ R     1000000   0.16 B     0       "0x" / "0x39595A"
type       INT32     Z _ R     1000000   0.19 B     0       "0" / "4"
is_new     INT32     Z _ R     1000000   0.04 B     0       "0" / "1"
duration   INT32     Z _ R     1000000   0.07 B     0       "0" / "2"
addr1      BINARY    Z _ R     1000000   1.20 B     0       "0x" / "0x5A5954454B20484F555345"
addr2      BINARY    Z _ R     1000000   0.20 B     0       "0x" / "0x5A4F4E452043"
street     BINARY    Z _ R     1000000   0.44 B     0       "0x" / "0x5A494F4E5320434C4F5345"
locality   BINARY    Z _ R     1000000   0.35 B     0       "0x" / "0x5A45414C53"
town       BINARY    Z _ R     1000000   0.08 B     0       "0x4142424F5453204C414E474..." / "0x595354524144204D4555524947"
district   BINARY    Z _ R     1000000   0.06 B     0       "0x41445552" / "0x594F524B"
county     BINARY    Z _ R     1000000   0.03 B     0       "0x41564F4E" / "0x594F524B"

[gingerwizard]

parquet-tools inspect house_prices.parquet --detail
gives this information but not per row group and not succinctly.