[FLINK-39069][SQL Client] Support saving and exporting SQL execution history

[featzhang]

What is the purpose of the change

This PR implements support for viewing SQL execution history in the Flink SQL Client by adding a new HISTORY command.

Related JIRA: https://issues.apache.org/jira/browse/FLINK-39069

Brief change log

• Add SHOW_HISTORY command enum type in Command.java
• Implement HistoryCommandPrinter class to read and display history file content
• Add "HISTORY" keyword parsing in SqlCommandParserImpl
• Pass history file path through SqlMultiLineParser to enable history reading
• Update help message in CliStrings to include the new HISTORY command
• Handle edge cases (empty file, file not exists, IO errors)

Verifying this change

This change can be verified manually as follows:

1. Start SQL Client: ./bin/sql-client.sh embedded
2. Execute some SQL statements, e.g., CREATE TABLE t1 (id INT);
3. Run HISTORY; command
4. Verify that previously executed statements are displayed with line numbers
5. Test edge cases: Run HISTORY when no history file exists

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): no
• The public API, i.e., is any changed class annotated with @Public(Evolving): no
• The serializers: no
• The runtime per-record code paths: no
• Anything that affects deployment or recovery: no
• The S3 file system connector: no

Documentation

• Does this pull request introduce a new feature? yes
• If yes, how is the feature documented? code comments and JavaDoc
• The HISTORY command is included in the SQL Client help message

[flinkbot]

CI report:

• c43bf42 Azure: FAILURE

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