Handwired/Stream_Cheap/2x4: Add via support (#13297)

* Handwired/Stream_Cheap/2x4: Add via support

Signed-off-by: Luigi311 <luigi311.lg@gmail.com>

* Handwired/Stream_Cheap: Update readme for via

Signed-off-by: Luigi311 <luigi311.lg@gmail.com>

* Handwired/Stream_Cheap/2x4: Add 2x4 to via json

Signed-off-by: Luigi311 <luigi311.lg@gmail.com>

* Handwired/Stream_Cheap/2x4: Add GPL2+ License to keymap

Signed-off-by: Luigi311 <luigi311.lg@gmail.com>

keyboards/handwired/stream_cheap/2x4/keymaps/via/keymap.c

@@ -0,0 +1,36 @@
+/*
+Copyright 2021 Luigi311
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+    // Default layer
+    [0] = LAYOUT_ortho_2x4(
+        KC_F13, KC_F14, KC_F15, KC_F16,
+        KC_F17, KC_F18, KC_F19, KC_F20
+    ),
+    [1] = LAYOUT_ortho_2x4(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+    [2] = LAYOUT_ortho_2x4(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+    [3] = LAYOUT_ortho_2x4(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+};