[Keyboard] Add SyenaKeyboards (#22168)

Co-authored-by: Syenasweta <syenasweta@gmail.com>

keyboards/syenakeyboards/aswagata/info.json

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+{
+    "manufacturer": "Syenasweta",
+    "keyboard_name": "SyenaKeyboards Aswagata",
+    "maintainer": "syenasweta",
+    "bootloader": "rp2040",
+    "diode_direction": "COL2ROW",
+    "features": {
+        "bootmagic": true,
+        "command": true,
+        "console": true,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": true
+    },
+    "matrix_pins": {
+        "cols": ["GP20", "GP21"],
+        "rows": ["GP10", "GP11"]
+    },
+    "processor": "RP2040",
+    "url": "https://github.com/syenasweta/syenakeyboards",
+    "usb": {
+        "device_version": "1.0.0",
+        "pid": "0x4173",
+        "vid": "0x5373"
+    }
+    "layouts": {
+        "LAYOUT_ortho_2x2": {
+            "layout": [
+                {"matrix": [0, 0], "x": 0, "y": 0},
+                {"matrix": [0, 1], "x": 1, "y": 0},
+                {"matrix": [1, 0], "x": 0, "y": 1},
+                {"matrix": [1, 1], "x": 1, "y": 1}
+            ]
+        }
+    }
+}

keyboards/syenakeyboards/aswagata/keymaps/default/keymap.c

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+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT_ortho_2x2(
+        KC_COPY,    KC_PASTE,
+        KC_SELECT,  KC_CUT
+    )
+};

keyboards/syenakeyboards/aswagata/keymaps/via/keymap.c

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+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT_ortho_2x2(
+        KC_COPY,    KC_PASTE,
+        KC_SELECT,  KC_CUT
+    )
+};

keyboards/syenakeyboards/aswagata/keymaps/via/rules.mk

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+VIA_ENABLE = yes

keyboards/syenakeyboards/aswagata/readme.md

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+# SyenaKeyboards Aswagata
+
+![SyenaKeyboards Aswagata](https://i.imgur.com/JMiFegah.jpg)
+
+Aswagata is a macropad with four buttons. The default functions are `copy`, `paste`, `cut`, and `select` for Linux, but can be customized.
+
+* Keyboard Maintainer: [Syenasweta](https://github.com/syenasweta)
+* Hardware Supported: RP2040
+* Hardware Availability: [Tokopedia (Syenasweta)](https://tokopedia.link/gDJ6Rgp4xDb)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make syenakeyboards/aswagata:default
+
+Flashing example for this keyboard:
+
+    make syenakeyboards/aswagata: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).
+
+## Bootloader
+
+Enter the bootloader in 1 ways:
+
+* **Bootmagic reset**: Hold down the top left key (assigned to `copy` by default) and plug in the keyboard.

keyboards/syenakeyboards/aswagata/rules.mk

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+# This file intentionally left blank