[Keymap] Added two different Swedish layouts for the Niu Mini 40% and Preonic 50%. (#6793)

* added preonic keymap senseored

* added niu_mini/tobias

* Changed readme's to explain that these are swedish layouts

* Apply suggestions from code review

Co-Authored-By: Drashna Jaelre <drashna@live.com>

* Update keyboards/niu_mini/keymaps/tobias/keymap.c

Co-Authored-By: Drashna Jaelre <drashna@live.com>

* Made changes according to drashna's suggestions

* Changed to tap_code(KC_NLCK)

* Added #define RGBLIGHT_SLEEP

* Added #define RGBLIGHT_SLEEP

* Removed include config.h

keyboards/niu_mini/keymaps/tobias/config.h

@@ -0,0 +1,40 @@
+#pragma once
+
+//#include "../../config.h"
+
+//#define MUSIC_MASK (keycode != KC_NO)
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+
+//#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#define RGBLIGHT_SLEEP
+#define TAPPING_TOGGLE 2
+#define ALT_F4 LALT(KC_F4)
+#define CTALDEL LSFT(LCTL(KC_ESC))
+#define NO_DEBUG
+#define CTLZ LCTL(KC_Z)
+#define CTLX LCTL(KC_X)
+#define CTLC LCTL(KC_C)
+#define CTLV LCTL(KC_V)
+