[Keyboard] add 3dp660 handwired (#10296)

* Create keymap.c

* Add files via upload

* Added files for handwired 3d printed clueboard 660

* create via layout files

* added layout files for via

* updated product ID to fix id conflicts

* change product ID to fix ID conflicts.

* fixed capitalization error that was causing issues

* fixed capitalization issues.

* fix syntax errors

* Fixed syntax errors (stray punctuation)

* Compatibility fixes

* Compatibility fixes

* Compatibility fixes

* Compatibility fixes

* capitalization fixes

* Compatibility fixes

* Compatibility fixes

* Compatibility Fixes

* Compatibility fixes

* Compatibility fixes

* Compatibility changes

* upkeep, fixing typos

* Update keyboards/handwired/3dp660/config.h

Removed Description line

* Update keyboards/handwired/3dp660/rules.mk

correct bootloader

* Update keyboards/handwired/3dp660/3dp660.h

fix case sensitive typos

* Update keyboards/handwired/3dp660/keymaps/default/keymap.c

change tab indentation to space indentations.

* Update keyboards/handwired/3dp660/keymaps/via/keymap.c

change tab indentations to space indentations

* Delete 3dp660.json

This file was for VIA, and shouldn't be in this repo. I placed it here so I wouldn't misplace it in my filesystem. My apologies.

* Update info.json

change suggestions to other file said to lowercase "ansi", caused reference issues, changed all instances of "ANSI" to "ansi".

* Update keymap.c

change suggestions to other file said to lowercase "ansi", caused reference issues, changed all instances of "ANSI" to "ansi".

* Update keymap.c

more capitalization fixes

* Update keyboards/handwired/3dp660/readme.md

shortened imgur url

* Update keyboards/handwired/3dp660/rules.mk

remove extraneous comments

* Delete config.h

* Update keyboards/handwired/3dp660/rules.mk

* Update 3dp660.c

add license headers to all .c and .h files

* Update 3dp660.h

added license header to all .c and .h files.

* Update keymap.c

added license header to all .c and .h files.

* Update keymap.c

added license header to all .c and .h files.

* Update keyboards/handwired/3dp660/readme.md

Add maintainer URL

* Update keyboards/handwired/3dp660/keymaps/default/keymap.c

remove extraneous default keymap layers

* Update keyboards/handwired/3dp660/keymaps/default/rules.mk

* Update rules.mk

Moved LTO to keyboard level.

* Update rules.mk

Moved LTO to keyboard level.

* Delete rules.mk

Made obsolete by LTO move to keyboard level.

* Update keyboards/handwired/3dp660/rules.mk

capitalization errors.

* Apply suggestions from code review

Housekeeping, changing code for readability.

keyboards/handwired/3dp660/keymaps/default/keymap.c

@@ -0,0 +1,34 @@
+ /* Copyright 2020 gooberpsycho
+  * 
+  * 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] = {
+
+    [0] = LAYOUT_66_ansi(
+        KC_ESC, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_MINS, KC_EQL, KC_BSPC, KC_DEL,
+        KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_LBRC, KC_RBRC, KC_BSLS, KC_END,
+        KC_CAPS, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT, KC_ENT,
+        KC_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_RSFT, KC_UP,
+        KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, KC_RALT, MO(1), KC_RCTL, KC_LEFT, KC_DOWN, KC_RGHT
+        ),
+    [1] = LAYOUT_66_ansi(
+        RESET, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_VOLU,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_MPLY, KC_TRNS, KC_TRNS, KC_TRNS, KC_MPRV, KC_VOLD, KC_MNXT
+        ),
+};