Release Note 1.6.0

# Features & Improvements
1. Support flink1.19
2. Synchronous creation of tables in the entire database supports custom Bukcet #307
3. Unify DorisSink and DorisBatchSink #309
4. Add copymode writing #312
5. Reconstruct the cdc entire library synchronization framework #319
6. Support a single task to synchronize multiple databases #322
7. Add ignore-commit parameter #327
8. DorisSource supports predicate pushdown #348

# Bug
1. When the mission is restarted, the survival option cannot be selected. #311
2. Fix the schemach problem when writing to multiple tables #313
3. Fixed some log printing errors #315
4. Fix e2e case instability problem
5. Fix a series of issues with HttpClient write timeout #344
6. Fix the problem that rename does not take effect #349
7. Fix the incompatibility problem of datetime/date return in Doris2.1.1 #351
8. Fix lookupjoin timestamp type error reporting problem #341

# Behavior Change
1. Enable new-schema-change by default #318
2. DorisSource changes default value #350
3. Remove doris.filter.query/doris.read.field parameters in FlinkSQL #348
4. Modify the naming and types of some parameters of FlinkSQL #337

# Thanks
@bingquanzhao
@caoliang-web
@DongLiang-0
@JNSimba
@smallhibiscus
@vinlee19
@yulei0824

Use the issue body as the source material for the 1.6.0 release note, preserving its Features & Improvements, Bug, Behavior Change, and Thanks sections. First locate the repository's release-note or changelog convention; done means a release note for version 1.6.0 records the listed changes and contributors accurately.

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