[Keyboard] add dyz60-hs (#17763)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Joel Challis <git@zvecr.com>

keyboards/dyz/dyz60_hs/readme.md

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+# dyz60
+
+![dyz60 pcb](https://i.imgur.com/l9z5KuJh.jpg)
+
+60% layout has flexcut with multiple layout and mounting support.
+
+* Keyboard Maintainer: [dayatz](https://github.com/dayatz)
+* Hardware Supported: dyz60, ATmega32U4
+* Hardware Availability: Local Indonesia GB.
+
+#### Enter Bootloader
+
+Enter the bootloader in 3 ways:
+
+* **Bootmagic reset**: Hold down the Esc key and plug in the keyboard
+* **Physical reset pins**: Briefly short the reset pins on the bottom of Space key
+
+
+#### Flashing
+
+Make example for this keyboard (after setting up your build environment):
+
+    make dyz/dyz60:default
+
+Flashing example for this keyboard:
+
+    make dyz/dyz60:default:flash
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).