added support for x86_64-pc-windows-msvc 64-bit MSVC

bdk-jvm/plugins/src/main/kotlin/org/bitcoindevkit/plugins/Enums.kt

@@ -4,11 +4,13 @@ package org.bitcoindevkit.plugins
 val operatingSystem: OS = when {
     System.getProperty("os.name").contains("mac", ignoreCase = true) -> OS.MAC
     System.getProperty("os.name").contains("linux", ignoreCase = true) -> OS.LINUX
+    System.getProperty("os.name").contains("windows", ignoreCase = true) -> OS.WINDOWS
     else -> OS.OTHER
 }
 
 enum class OS {
     MAC,
     LINUX,
+    WINDOWS,
     OTHER,
 }

bdk-jvm/plugins/src/main/kotlin/org/bitcoindevkit/plugins/UniFfiJvmPlugin.kt

@@ -35,6 +35,14 @@ internal class UniFfiJvmPlugin : Plugin<Project> {
                     args(cargoArgs)
                 }
             }
+            else if(operatingSystem == OS.WINDOWS) {
+                exec {
+                    workingDir("${project.projectDir}/../../bdk-ffi")
+                    executable("cargo")
+                    val cargoArgs: List<String> = listOf("build", "--profile", "release-smaller", "--target", "x86_64-pc-windows-msvc")
+                    args(cargoArgs)
+                }
+            }
         }
 
         // move the native libs build by cargo from target/.../release/
@@ -70,13 +78,30 @@ internal class UniFfiJvmPlugin : Plugin<Project> {
                         ext = "so"
                     )
                 )
+            } else if (operatingSystem == OS.WINDOWS) {
+                libsToCopy.add(
+                    CopyMetadata(
+                        targetDir = "x86_64-pc-windows-msvc",
+                        resDir = "win32-x86-64",
+                        ext = "dll"
+                    )
+                )
+            }
+            val libName = when (operatingSystem) {
+                OS.WINDOWS -> {
+                    "bdkffi"
+                }
+
+                else -> {
+                    "libbdkffi"
+                }
             }
 
             libsToCopy.forEach {
                 doFirst {
                     copy {
                         with(it) {
-                            from("${project.projectDir}/../../target/${this.targetDir}/release-smaller/libbdkffi.${this.ext}")
+                            from("${project.projectDir}/../../target/${this.targetDir}/release-smaller/${libName}.${this.ext}")
                             into("${project.projectDir}/../../bdk-jvm/lib/src/main/resources/${this.resDir}/")
                         }
                     }