added pkgbuild script

PKGBUILD

@@ -0,0 +1,26 @@
+pkgname="moddah"
+pkgver="0.0.1"
+pkgdesc="A modloader manager for QuiltMC, FabricMC and ForgeModLoader."
+arch=(“x86_x64” “arm”)
+depends=("curl")
+makedepends=("cargo")
+license=("Right to modify")
+
+prepare() {
+    cargo fetch --locked --target "$CARCH-unknown-linux-gnu"
+}
+
+build() {
+    export RUSTUP_TOOLCHAIN=stable
+    export CARGO_TARGET_DIR=target
+    cargo build --frozen --release --all-features
+}
+
+check() {
+    export RUSTUP_TOOLCHAIN=stable
+    cargo test --frozen --all-features
+}
+
+package() {
+    install -Dm0755 -t "$pkgdir/usr/bin/" "target/release/$pkgname"
+}