♻️ Major code restructuring

src/html/opt_id.rs

@@ -0,0 +1,29 @@
+use crate::{fn_with, SmartDefault};
+
+#[derive(SmartDefault)]
+pub struct OptionId(Option<String>);
+
+impl OptionId {
+    pub fn new(value: impl Into<String>) -> Self {
+        OptionId::default().with_value(value)
+    }
+
+    // OptionId BUILDER.
+
+    #[fn_with]
+    pub fn alter_value(&mut self, value: impl Into<String>) -> &mut Self {
+        self.0 = Some(value.into().trim().replace(' ', "_"));
+        self
+    }
+
+    // OptionId GETTERS.
+
+    pub fn get(&self) -> Option<String> {
+        if let Some(value) = &self.0 {
+            if !value.is_empty() {
+                return Some(value.to_owned());
+            }
+        }
+        None
+    }
+}