[DOP-27545] docs(mddocs): add en docs from docs_rework #1844

Job	Run time
MSSQL tests / Run MSSQL tests	7m 52s
Hive tests / Run Hive tests	3m 49s
Clickhouse tests / Run Clickhouse tests	9m 17s
MySQL tests / Run MySQL tests	6m 47s
WebDAV tests / Run WebDAV tests	3m 42s
FTP tests / Run FTP tests	9m 33s
Oracle tests / Run Oracle tests	8m 0s
S3 tests / Run S3 tests	11m 1s
SFTP tests / Run SFTP tests	6m 34s
Iceberg tests / Run Iceberg tests	7m 2s
FTPS tests / Run FTPS tests	5m 56s
Scheduler tests / Run Scheduler tests	4m 39s
HDFS tests / Run HDFS tests	7m 57s
Unit tests / Run unit tests	2m 47s
Samba tests / Run Samba tests	6m 21s
Tests done	14s
	1h 41m 31s

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