Add UniteTest Data Generation Class, Add HashField UnitTest and Pass it.

[Zrealshadow]

• Add TestTable class, which can load table data from csv for unitTest.
• Add TestTableTest, which is a unitTest for TestTable class. Print the loaded table and compare with truth data manually.
• Add HashFieldTest class, which involves 4 class, HashMetaFieldRS, HashMetaFieldWS, HashFieldWS, CoolFieldRS. In Unittest, generate data and write it into buffer with writestore part; then read data from this buffer with readstore part. Compare the expected value and actual value

[Zrealshadow]

Fix the untracked file. Clean commit log and rebase it. plz, review and merge
@hugy718

[hugy718]

works at my side. Maybe we shall place the TestData into the corresponding src/test/resources

[Zrealshadow]

fix it