Add: Room tables (1/5 in replacing SQLite with Room)

src/main/kotlin/com/looker/droidify/database/Tables.kt

@@ -0,0 +1,67 @@
+package com.looker.droidify.database
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import com.looker.droidify.entity.Product
+import com.looker.droidify.entity.ProductItem
+import com.looker.droidify.entity.Repository
+
+@Entity
+class Repository {
+    @PrimaryKey(autoGenerate = true)
+    @ColumnInfo(name = "_id")
+    var id: Long = 0
+
+    var enabled = 0
+    var deleted = 0
+
+    @ColumnInfo(typeAffinity = ColumnInfo.BLOB)
+    var data: Repository? = null
+}
+
+@Entity(primaryKeys = ["repository_id", "package_name"])
+class Product {
+    var repository_id: Long = 0
+    var package_name = ""
+
+    var name = ""
+    var summary = ""
+    var description = ""
+    var added = 0
+    var updated = 0
+    var version_code = 0
+    var signatures = ""
+    var compatible = 0
+
+    @ColumnInfo(typeAffinity = ColumnInfo.BLOB)
+    var data: Product? = null
+
+    @ColumnInfo(typeAffinity = ColumnInfo.BLOB)
+    var data_item: ProductItem? = null
+}
+
+@Entity(primaryKeys = ["repository_id", "package_name", "name"])
+class Category {
+    var repository_id: Long = 0
+    var package_name = ""
+    var name = ""
+}
+
+@Entity
+class Installed {
+    @PrimaryKey
+    var package_name = ""
+
+    var version = ""
+    var version_code = 0
+    var signatures = ""
+}
+
+@Entity
+class Lock {
+    @PrimaryKey
+    var package_name = ""
+
+    var version_code = 0
+}