refactor: some restructuring

- move structs inside `sr_tools.rs` into individual file
- implement in-game equip handler (relic & lightcone)

common/src/structs/relic.rs

@@ -0,0 +1,95 @@
+use proto::{BattleRelic, EquipRelic, ItemType, RelicAffix};
+use serde::{Deserialize, Serialize};
+
+use crate::impl_from;
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub struct Relic {
+    pub level: u32,
+    #[serde(alias = "relicId")]
+    pub relic_id: u32,
+    // #[serde(alias = "relicSetId")]
+    // pub relic_set_id: u32,
+    #[serde(alias = "mainAffixId")]
+    pub main_affix_id: u32,
+    #[serde(alias = "subAffixes")]
+    pub sub_affixes: Vec<SubAffix>,
+    #[serde(alias = "internalUid")]
+    pub internal_uid: u32,
+    #[serde(alias = "equipAvatar")]
+    pub equip_avatar: u32,
+}
+
+#[derive(Debug, Serialize, Deserialize, Default, Clone)]
+pub struct SubAffix {
+    #[serde(alias = "subAffixId")]
+    pub sub_affix_id: u32,
+    pub count: u32,
+    pub step: u32,
+}
+
+impl Relic {
+    pub fn is_matching_slot(&self, slot: u32) -> bool {
+        self.get_slot() == slot
+    }
+
+    pub fn get_slot(&self) -> u32 {
+        self.relic_id % 10
+    }
+
+    pub fn get_unique_id(&self) -> u32 {
+        super::get_item_unique_id(self.internal_uid, ItemType::ItemRelic)
+    }
+}
+
+impl_from!(SubAffix, RelicAffix, |v| {
+    RelicAffix {
+        affix_id: v.sub_affix_id,
+        cnt: v.count,
+        step: v.step,
+    }
+});
+
+impl_from!(Relic, BattleRelic, |value| {
+    BattleRelic {
+        id: value.relic_id,
+        level: value.level,
+        main_affix_id: value.main_affix_id,
+        unique_id: value.get_unique_id(),
+        sub_affix_list: value
+            .sub_affixes
+            .iter()
+            .map(|v| v.into())
+            .collect::<Vec<_>>(),
+        ..Default::default()
+    }
+});
+
+impl_from!(Relic, EquipRelic, |value| {
+    EquipRelic {
+        slot: value.get_slot(),
+        relic_unique_id: value.get_unique_id(),
+    }
+});
+
+impl_from!(Relic, proto::Relic, |value| {
+    proto::Relic {
+        equip_avatar_id: value.equip_avatar,
+        exp: 0,
+        is_protected: false,
+        level: value.level,
+        main_affix_id: value.main_affix_id,
+        tid: value.relic_id,
+        unique_id: value.get_unique_id(),
+        sub_affix_list: value
+            .sub_affixes
+            .iter()
+            .map(|v| RelicAffix {
+                affix_id: v.sub_affix_id,
+                cnt: v.count,
+                step: v.step,
+            })
+            .collect::<Vec<_>>(),
+        ..Default::default()
+    }
+});