feat: Support incremental mode:

- Support incremental mode in heromodels
- Updated the example to refelct the changes
- Updated the tests to reflect the changes

heromodels/src/models/governance/proposal.rs

@@ -75,7 +75,14 @@ pub struct Ballot {
 }
 
 impl Ballot {
-    pub fn new(id: u32, user_id: u32, vote_option_id: u8, shares_count: i64) -> Self {
+    /// Create a new ballot
+    ///
+    /// # Arguments
+    /// * `id` - Optional ID for the ballot. If None, the ID will be auto-generated.
+    /// * `user_id` - ID of the user who cast this ballot
+    /// * `vote_option_id` - ID of the vote option chosen
+    /// * `shares_count` - Number of shares/tokens/voting power
+    pub fn new(id: Option<u32>, user_id: u32, vote_option_id: u8, shares_count: i64) -> Self {
         Self {
             base_data: BaseModelData::new(id),
             user_id,
@@ -107,7 +114,16 @@ pub struct Proposal {
 }
 
 impl Proposal {
-    pub fn new(id: u32, creator_id: impl ToString, title: impl ToString, description: impl ToString, vote_start_date: DateTime<Utc>, vote_end_date: DateTime<Utc>) -> Self {
+    /// Create a new proposal
+    ///
+    /// # Arguments
+    /// * `id` - Optional ID for the proposal. If None, the ID will be auto-generated.
+    /// * `creator_id` - ID of the user who created the proposal
+    /// * `title` - Title of the proposal
+    /// * `description` - Description of the proposal
+    /// * `vote_start_date` - Date when voting starts
+    /// * `vote_end_date` - Date when voting ends
+    pub fn new(id: Option<u32>, creator_id: impl ToString, title: impl ToString, description: impl ToString, vote_start_date: DateTime<Utc>, vote_end_date: DateTime<Utc>) -> Self {
         Self {
             base_data: BaseModelData::new(id),
             creator_id: creator_id.to_string(),
@@ -128,8 +144,8 @@ impl Proposal {
         self.options.push(new_option);
         self
     }
-    
-    pub fn cast_vote(mut self, ballot_id: u32, user_id: u32, chosen_option_id: u8, shares: i64) -> Self {
+
+    pub fn cast_vote(mut self, ballot_id: Option<u32>, user_id: u32, chosen_option_id: u8, shares: i64) -> Self {
         if self.vote_status != VoteEventStatus::Open {
             eprintln!("Voting is not open for proposal '{}'", self.title);
             return self;