feat: Basic structs

- Added Account struct
- Added Config struct
- Added empty Map struct
- Added Quest struct

src/quest/mod.rs

@@ -0,0 +1,62 @@
+//! Module for handling text-based quests and user answers
+
+use serde::{ Serialize, Deserialize };
+
+/// Difficulty of the quest
+#[derive(Serialize, Deserialize)]
+pub enum QuestDifficulty {
+    /// Easy quest
+    Easy,
+    /// Normal quest
+    Normal,
+    /// Hard quest
+    Hard,
+    /// Special case of hard quests. Also is a default value for enum
+    Secret
+}
+
+impl Default for QuestDifficulty {
+    fn default() -> Self {
+        QuestDifficulty::Secret
+    }
+}
+
+fn default_name() -> String {
+    "Slay the dragon".to_string()
+}
+
+fn default_description() -> String {
+    "Just do it in any way".to_string()
+}
+
+fn default_answer() -> String {
+    "Attachment should show that the dragon was slain".to_string()
+}
+
+/// Quest struct
+#[derive(Serialize, Deserialize)]
+pub struct Quest {
+    /// Quest identifier
+    #[serde(default)]
+    pub id: u16,
+
+    /// Difficulty of this quest
+    #[serde(default)]
+    pub difficulty: QuestDifficulty,
+    
+    /// Reward for the quest
+    #[serde(default)]
+    pub reward: u32,
+    
+    /// Visible quest name
+    #[serde(default = "default_name")]
+    pub name: String,
+    
+    /// Visible quest description
+    #[serde(default = "default_description")]
+    pub description: String,
+    
+    /// Quest answer, available for admins
+    #[serde(default = "default_answer")]
+    pub answer: String,
+}