[PLUGIN-1737] Added Schema Detection for CSV/TSV format

[psainics]

Added Schema Detection for CSV/TSV format

Jira : Plugin-1737

Description

User will be able to get Schema for delimited files (CSV/TSV)

UI Fields changes

• Add Schema Button appears when format is csv/tsv
• Sample Size filed appears when format is csv/tsv
• CSV Skip First Row is renamed to CSV/TSV Skip First Row
• Added new UI field Enable Quoted Values

Docs

• Docs for new fileds added.

• CSV Skip First Row renamed.

Get Schema: Auto-detects schema from file. Supported formats are: csv, tsv. Sample Size: The maximum number of rows in a file that will get investigated for automatic data type detection. Default is 100. CSV/TSV Skip First Row: Whether to skip the first row of the HTTP response. This is usually set if the first row is a header row.

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Unit Tests

• Unit Test for DelimitedSchemaDetector

• Unit Test for DelimitedPage

• Unit Test for RawStringPerLine

[psainics]

@albertshau The duplicated code is remove. I was not aware the format-X are published deps that can use outside the hydrator repo.

Can you help me with which cdap.plugin.version is appropriate for use here currently i have added the latest =2.13.0-SNAPSHOT.

[albertshau]

minor comments, please fix and squash commits, then we can merge