Add cube count column for project table

[MorningLight5]

Proposed changes

Add cube count column for project table for convience.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Checklist

• I have create an issue on Kylin's jira, and have described the bug/feature there in detail
• Commit messages in my PR start with the related jira ID, like "KYLIN-0000 Make Kylin project open-source"
• Compiling and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• If this change need a document change, I will prepare another pr against the document branch
• Any dependent changes have been merged

[coveralls]

Pull Request Test Coverage Report for Build 6048

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 10 unchanged lines in 4 files lost coverage.
• Overall coverage decreased (-0.002%) to 27.975%

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Files with Coverage Reduction	New Missed Lines	%
core-dictionary/src/main/java/org/apache/kylin/dict/lookup/cache/RocksDBLookupTable.java	1	81.08%
core-cube/src/main/java/org/apache/kylin/cube/cuboid/TreeCuboidScheduler.java	2	68.46%
stream-core/src/main/java/org/apache/kylin/stream/core/storage/CheckPointStore.java	2	73.74%
core-cube/src/main/java/org/apache/kylin/cube/inmemcubing/MemDiskStore.java	5	77.81%

Totals
Change from base Build 6043:	-0.002%
Covered Lines:	26109
Relevant Lines:	93331

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💛 - Coveralls

[shaofengshi]

Hi Tianhui, the code looks good; Next time, please provide the JIRA ID in the PR description, and the GIT commit message; I searched it in JIRA for a while, and then manually added that this time, hope next time it can be prepared well from begining. Thank you!

[MorningLight5]

Hi Tianhui, the code looks good; Next time, please provide the JIRA ID in the PR description, and the GIT commit message; I searched it in JIRA for a while, and then manually added that this time, hope next time it can be prepared well from begining. Thank you!

My apologizes. Thanks for your kindness.