Add --offset flag to atuin search

This flag allows the user to continue searching at an offset. This is
useful for building tools that use atuin to search for previous
commands and return only one result.

```

atuin search --limit 1
atuin search --limit 1 --offset 1
atuin search --limit 1 --offset 2
```

atuin-client/src/database.rs

@@ -80,6 +80,7 @@ pub trait Database: Send + Sync + 'static {
         context: &Context,
         query: &str,
         limit: Option<i64>,
+        offset: Option<i64>,
         before: Option<i64>,
         after: Option<i64>,
     ) -> Result<Vec<History>>;
@@ -341,6 +342,7 @@ impl Database for Sqlite {
         context: &Context,
         query: &str,
         limit: Option<i64>,
+        offset: Option<i64>,
         before: Option<i64>,
         after: Option<i64>,
     ) -> Result<Vec<History>> {
@@ -362,6 +364,10 @@ impl Database for Sqlite {
             sql.and_where_lt("timestamp", before);
         }
 
+        if let Some(offset) = offset {
+            sql.offset(offset);
+        }
+
         match filter {
             FilterMode::Global => &mut sql,
             FilterMode::Host => sql.and_where_eq("hostname", quote(&context.hostname)),

src/command/client/search.rs

@@ -50,6 +50,10 @@ pub struct Cmd {
     #[arg(long)]
     limit: Option<i64>,
 
+    /// Offset from the start of the results
+    #[arg(long)]
+    offset: Option<i64>,
+
     /// Open interactive search UI
     #[arg(long, short)]
     interactive: bool,
@@ -112,6 +116,7 @@ impl Cmd {
                 self.before.clone(),
                 self.after.clone(),
                 self.limit,
+                self.offset,
                 &self.query,
                 &mut db,
             )
@@ -141,6 +146,7 @@ impl Cmd {
                         self.before.clone(),
                         self.after.clone(),
                         self.limit,
+                        self.offset,
                         &self.query,
                         &mut db,
                     )
@@ -166,6 +172,7 @@ async fn run_non_interactive(
     before: Option<String>,
     after: Option<String>,
     limit: Option<i64>,
+    offset: Option<i64>,
     query: &[String],
     db: &mut impl Database,
 ) -> Result<Vec<History>> {
@@ -194,6 +201,7 @@ async fn run_non_interactive(
             &context,
             query.join(" ").as_str(),
             limit,
+            offset,
             before,
             after,
         )

src/command/client/search/engines/db.rs

@@ -22,6 +22,7 @@ impl SearchEngine for Search {
                 Some(200),
                 None,
                 None,
+                None,
             )
             .await?
             .into_iter()