[ARCTIC #449]Add can spill disk map

[shidayang]

Why are the changes needed?

see #449

Brief change log

(For example:)

• Add the 'scan.startup.mode' configuration to the ArcticScanContext in the flink modules
• The flink 1.12 and 1.14 versions are affected.
• Add the documentation in the flink chapter

How was this patch tested?

• [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible

• [ ] Add screenshots for manual tests if appropriate

• [ ] Run test locally before making a pull request

Documentation

• Does this pull request introduces a new feature? (yes / no)
• If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented)

[shidayang]

link issue #449

[zhoujinsong]

@shidayang You may need recomplete this PR's description to replace the example ones.