Add edvorakjp kepmap for crkbd (#4537)

* edvorakjp layout for crkbd

* bugfix of edvorakjp

QMK cannot send keycode that doesn't exists on new layer.

keyboards/crkbd/keymaps/edvorakjp/oled.h

@@ -0,0 +1,24 @@
+#ifndef OLED_USER_H
+#define OLED_USER_H
+
+//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
+#include "ssd1306.h"
+#include "edvorakjp.h"
+
+//assign the right code to your layers for OLED display
+#define L_BASE 0
+
+extern uint8_t is_master;
+extern bool japanese_mode;
+
+// method prototypes defined in crkbd/lib
+extern const char *read_logo(void);
+
+const char *read_mode_icon(bool swap);
+const char *read_layer_state(void);
+const char *read_host_led_state(void);
+void matrix_update(struct CharacterMatrix *dest,
+                   const struct CharacterMatrix *source);
+void iota_gfx_task_user(void);
+
+#endif // OLED_CONFIG_USER_H