Refactor qmk_install.sh (#10681)

util/install/freebsd.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+_qmk_install_prepare() {
+    sudo pkg update
+}
+
+_qmk_install() {
+    echo "Installing dependencies"
+
+    sudo pkg install -y \
+        git wget gmake gcc zip unzip diffutils \
+        python3 \
+        avr-binutils avr-gcc avr-libc \
+        arm-none-eabi-binutils arm-none-eabi-gcc arm-none-eabi-newlib \
+        avrdude dfu-programmer dfu-util
+
+    sudo python3 -m pip install -r $QMK_FIRMWARE_DIR/requirements.txt
+}