[Improve][Connector-V2] Time supports default value

[corgy-w]

Purpose of this pull request

Time supports default value and keyword

eg：

{
              name = book_publication_time
              type = timestamp
              defaultValue = "2024-09-12 15:45:30"
              comment = "book publication time"
           },
           {
              name = book_publication_time2
              type = timestamp
              defaultValue = CURRENT_TIMESTAMP
              comment = "book publication time2"
           },
           {
              name = book_publication_time3
              type = time
              defaultValue = "15:45:30"
              comment = "book publication time3"
           },
           {
              name = book_publication_time4
              type = time
              defaultValue = CURRENT_TIME
              comment = "book publication time4"
           },
           {
              name = book_publication_time5
              type = date
              defaultValue = "2024-09-12"
              comment = "book publication time5"
           },
           {
              name = book_publication_time6
              type = date
              defaultValue = CURRENT_DATE
              comment = "book publication time6"
           }

or 

schema = {
      fields {
        c_map = "map<string, string>"
        c_double = double
        c_timestamp = timestamp
      }
    }
    rows = [
       {
         kind = INSERT
         fields = [{"__name__": "test1"},  1.23, CURRENT_TIMESTAMP]
     }]

Does this PR introduce any user-facing change?

How was this patch tested?

Check list

• If any new Jar binary package adding in your PR, please add License Notice according
  New License Guide
• If necessary, please update the documentation to describe the new feature. https://github.com/apache/seatunnel/tree/dev/docs
• If you are contributing the connector code, please check that the following files are updated:
  1. Update plugin-mapping.properties and add new connector information in it
  2. Update the pom file of seatunnel-dist
  3. Add ci label in label-scope-conf
  4. Add e2e testcase in seatunnel-e2e
  5. Update connector plugin_config
• Update the release-note.

[Hisoka-X]

Please update the doc

please update the doc

[Hisoka-X]

LGTM. Thanks @corgy-w