Add edvorakjp layout for the Iris keyboard (#3020)

* add edvorakjp libraries

* add edvorakjp iris keymap

* change the custom eeconfig's address to prevent future address conflicts

* deleted the verbose line of rule.mk

users/edvorakjp/edvorakjp.h

@@ -0,0 +1,74 @@
+#ifndef USERSPACE
+#define USERSPACE
+
+#include "quantum.h"
+#include "action_layer.h"
+
+#define EECONFIG_EDVORAK (uint8_t *)20
+
+extern keymap_config_t keymap_config;
+
+typedef union {
+  uint8_t raw;
+  struct {
+    bool enable_jp_extra_layer : 1;
+    bool enable_kc_lang        : 1;  // for macOS
+  };
+} edvorakjp_config_t;
+
+enum edvorakjp_layers {
+  _EDVORAK = 0,
+  _EDVORAKJ1,
+  _EDVORAKJ2,
+  _QWERTY,
+  _LOWER,
+  _RAISE,
+  _ADJUST,
+  _EXTRA,
+};
+
+enum edvorakjp_keycodes {
+  EDVORAK = SAFE_RANGE,
+  QWERTY,
+  LOWER,
+  RAISE,
+  KC_MAC,
+  KC_WIN,
+  KC_EXTON,
+  KC_EXTOFF,
+  KC_JPN,
+  KC_ENG,
+  KC_AI,
+  KC_OU,
+  KC_EI,
+  KC_ANN,
+  KC_ONN,
+  KC_ENN,
+  KC_INN,
+  KC_UNN,
+  NEW_SAFE_RANGE
+};
+
+uint8_t eeconfig_read_edvorakjp(void);
+void eeconfig_update_edvorakjp(uint8_t val);
+
+void dvorakj_layer_off(void);
+void update_japanese_mode(bool new_state);
+void matrix_init_user(void);
+void matrix_init_keymap(void);
+uint32_t layer_state_set_user(uint32_t state);
+uint32_t layer_state_set_keymap(uint32_t state);
+
+/*
+ * Each process_record_* methods defined here are
+ * return false if processed, or return true if not processed.
+ * You can add your original macros in process_record_keymap() in keymap.c.
+ */
+bool process_record_keymap(uint16_t keycode, keyrecord_t *record);
+bool process_record_edvorakjp_ext(uint16_t keycode, keyrecord_t *record);
+bool process_record_edvorakjp_config(uint16_t keycode, keyrecord_t *record);
+bool process_record_layer(uint16_t keycode, keyrecord_t *record);
+bool process_record_ime(uint16_t keycode, keyrecord_t *record);
+bool process_record_user(uint16_t keycode, keyrecord_t *record);
+
+#endif