[DOP-36596] Introduce HDFS.Extra class

[dolfinus]

Change Summary

Related issue number

Checklist

• Commit message and PR title is comprehensive
• Keep the change as small as possible
• Unit and integration tests for the changes exist
• Tests pass on CI and coverage does not decrease
• Documentation reflects the changes where applicable
• docs/changelog/next_release/<pull request or issue id>.<change type>.rst file added describing change
  (see CONTRIBUTING.rst for details.)
• My PR is ready to review.

[github-actions]

Coverage Report •

File	Stmts	Miss	Branch	BrPart	Cover	Missing
onetl/connection/file_connection/hdfs
connection.py	247	247	40	40	0%	3, 5–10, 12, 14, 16–17, 25–26, 35–42, 44–49, 53–54, 68–69, 72, 87–88, 90–91, 94–95, 252–258, 260, 262, 264, 266, 268–270, 309–311, 315, 317–318, 320–324, 326–329, 331–333, 335–337, 339–341, 343–349, 363, 365–368, 370–372, 374, 376–377, 379–381, 384–387, 389, 391–393, 396–398, 400, 402–404, 408, 412, 414–417, 419–422, 424, 426–433, 435–437, 439, 441–444, 446–448, 454–458, 460–461, 464–467, 469–470, 472–475, 477–478, 480–482, 485–486, 491–494, 496–498, 500–502, 504–505, 507, 509–511, 513–517, 519–524, 526, 532–533, 535, 537–538, 540, 542–543, 545–546, 548–549, 551–552, 554–555, 557–558, 560, 562–563, 565–566, 568–569, 571–572, 574–575, 577–578, 607, 615–617, 619–621, 623–624, 626–627, 629–630, 632–633, 635, 637–638, 640, 642–643, 645
TOTAL	10336	1541	1852	375	85%