feat: Full rework to support both Kotlin and Java and make it work like the Other SDKs (#2)

src/test/kotlin/net/tcgdex/sdk/APITest.kt

@@ -0,0 +1,52 @@
+package net.tcgdex.sdk
+
+import java.io.IOException
+import kotlin.test.Test
+import kotlin.test.BeforeTest
+import kotlin.test.assertNotNull
+
+class APITest {
+    private lateinit var api: TCGdex
+    @BeforeTest
+    fun initAPI() {
+        api = TCGdex("en")
+    }
+
+    @Test
+    @Throws(IOException::class)
+    fun testFullCardInfo() {
+        assertNotNull(api.fetchCards())
+        assertNotNull(api.fetchCard("swsh3-136"))
+        assertNotNull(api.fetchCard("swsh3", "136"))
+        assertNotNull(api.fetchSet("swsh3"))
+        assertNotNull(api.fetchSets())
+        assertNotNull(api.fetchSerie("swsh"))
+        assertNotNull(api.fetchSeries())
+        assertNotNull(api.fetchTypes())
+        assertNotNull(api.fetchType("Colorless"))
+        assertNotNull(api.fetchRetreats())
+        assertNotNull(api.fetchRetreat("1"))
+        assertNotNull(api.fetchRarities())
+        assertNotNull(api.fetchRarity("Uncommon"))
+        assertNotNull(api.fetchIllustrators())
+        assertNotNull(api.fetchIllustrator("tetsuya koizumi"))
+        assertNotNull(api.fetchHPs())
+        assertNotNull(api.fetchHP("110"))
+        assertNotNull(api.fetchCategories())
+        assertNotNull(api.fetchCategory("Pokemon"))
+        assertNotNull(api.fetchDexIds())
+        assertNotNull(api.fetchDexId("162"))
+        assertNotNull(api.fetchEnergyTypes())
+        assertNotNull(api.fetchEnergyType("Special"))
+        assertNotNull(api.fetchRegulationMarks())
+        assertNotNull(api.fetchRegulationMark("D"))
+        assertNotNull(api.fetchStages())
+        assertNotNull(api.fetchStage("Basic"))
+        assertNotNull(api.fetchSuffixes())
+        assertNotNull(api.fetchSuffix("EX"))
+        assertNotNull(api.fetchTrainerTypes())
+        assertNotNull(api.fetchTrainerType("Tool"))
+        assertNotNull(api.fetchVariants())
+        assertNotNull(api.fetchVariant("holo"))
+    }
+}