[Keyboard] Add Signum 3.0 for the elite-c (#5478)

* Add keyboard Signum 3.0 for the elite-c

* Update readme.md

* Remove unused macros

* Use bootmagic lite instead of full

* Add warning to keymap.c that it's auto-generate

* Add description for customizing keyboard layouts

* Make generate_km.py executable

* Make right shift available in numpad layer

* Update keyboards/signum/3_0/elitec/readme.md

Co-Authored-By: jceb <jceb@e-jc.de>

* Update keyboards/signum/3_0/elitec/readme.md

Co-Authored-By: jceb <jceb@e-jc.de>

* Fix typo in symbol name

1 files changed, 15 insertions, 0 deletions

diff --git a/keyboards/signum/3_0/elitec/elitec.h b/keyboards/signum/3_0/elitec/elitec.h
new file mode 100644
index 000000000..1749969de
--- /dev/null
+++ b/keyboards/signum/3_0/elitec/elitec.h
@@ -0,0 +1,15 @@
+#pragma once
+
+#include "quantum.h"
+
+#define LAYOUT( \
+        K000, K001, K002, K003, K004, K005, K006, K007, K008, K009, K010, K011, \
+        K100, K101, K102, K103, K104, K105, K106, K107, K108, K109, K110, K111, \
+        K200, K201, K202, K203, K204, K205, K206, K207, K208, K209, K210, K211, \
+        K300, K301, K302, K303, K304, K305, K306, K307, K308, K309, K310, K311 \
+) { \
+        { K000,  K001,  K002,  K003,  K004,  K005,  K006,  K007,  K008,  K009, K010, K011 }, \
+        { K100,  K101,  K102,  K103,  K104,  K105,  K106,  K107,  K108,  K109, K110, K111 }, \
+        { K200,  K201,  K202,  K203,  K204,  K205,  K206,  K207,  K208,  K209, K210, K211 }, \
+        { K300,  K301,  K302,  K303,  K304,  K305,  K306,  K307,  K308,  K309, K310, K311 } \
+}