Renaming CI tests respectively

Author: PicoCreator

.github/workflows/gradle-build.yml

@@ -1,4 +1,4 @@
-name: Java CI
+name: Core Test & Binary Build
 on:
   push:
     branches: [ master, eugene/* ]

.github/workflows/mysql-5-7.yml

@@ -1,4 +1,4 @@
-name: Java CI
+name: MySql 5.7 Support Test
 on:
   push:
     branches: [ master, eugene/* ]

.github/workflows/mysql-8.yml

@@ -1,4 +1,4 @@
-name: Java CI
+name: MySql 8.0 Support Test
 on:
   push:
     branches: [ master, eugene/* ]