Add gradle build setup

Signed-off-by: Martmists <martmists@gmail.com>

build.gradle.kts

@@ -0,0 +1,36 @@
+plugins {
+    id("com.android.application") version "7.0.3"
+}
+
+repositories {
+    google()
+    mavenCentral()
+}
+
+android {
+    compileSdk = 23
+    ndkVersion = "23.1.7779620"
+
+    externalNativeBuild {
+        cmake {
+            version = "3.21.3"
+            path = file("CMakeLists.txt")
+        }
+    }
+
+    defaultConfig {
+        externalNativeBuild {
+            cmake {
+                arguments += listOf("-DANDROID_ARM_NEON=ON", "-DANDROID_TOOLCHAIN=clang")
+                cFlags += listOf("-D__STDC_FORMAT_MACROS")
+                cppFlags += listOf("-fexceptions", "-frtti")
+            }
+        }
+
+        ndk {
+            abiFilters += listOf("armeabi-v7a","arm64-v8a","x86","x86_64")
+//            abiFilters += listOf("x86", "armeabi-v7a")
+//            abiFilters += listOf("x86", "x86_64", "armeabi", "armeabi-v7a", "arm64-v8a")
+        }
+    }
+}