[BUG] Fix em sort error

[sjgllgh]

What is the purpose of the change

Fix the bug that the sortByResource method in ResourceNodeSelectRule violates the general contract of comparators.

Related issues/PRs

Related issues: #4911

Brief change log

• Added and implemented a compare method for the Resource abstract class and its subclasses.;
• Modified the Java class ResourceNodeSelectRule to ensure that sortByResource uses the correct sorting method.

Note

• For LoadInstanceResource, memory is compared first. If the memory is the same, the number of CPU cores is compared. When the number of CPU cores is the same, the number of instances that have been launched will be compared. Other subcategories also adopted similar comparison rules.

Checklist

• I have read the Contributing Guidelines on pull requests.
• I have explained the need for this PR and the problem it solves
• I have explained the changes or the new features added to this PR
• I have added tests corresponding to this change
• I have updated the documentation to reflect this change
• I have verified that this change is backward compatible (If not, please discuss on the Linkis mailing list first)
• If this is a code change: I have written unit tests to fully verify the new behavior.

[peacewong]

LGTM.