[FLINK-35193][table] Support drop materialized table syntax and execution in continuous refresh mode

[hackergin]

What is the purpose of the change

Support drop materialized table syntax and execution in continuous refresh mode

Brief change log

• Support parser drop materialized table syntax in flink-sql-parser module
• Add DropMaterializedTableConverter for convert drop materialized table node to operations
• Support execution of drop materialized table

Verifying this change

• Added integration test for create and drop materialized table
• Add drop table operation in MaterializedTableStatementITCase after every test case finished

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 (performance sensitive): (no)
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (no)
• The S3 file system connector: (no)

Documentation

• Does this pull request introduce a new feature? (yes)
• If yes, how is the feature documented? (will be added in a separated pr)

[flinkbot]

CI report:

• ef94b24b264524cdfb1840aa91c73d5f3cc3631c Azure: SUCCESS

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