Add `--offset` flag to `atuin search` (#825)

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
```

1 files changed, 5 insertions, 0 deletions

diff --git a/atuin-client/src/database.rs b/atuin-client/src/database.rs
index 1a577a70..6d364dbe 100644
--- a/atuin-client/src/database.rs
+++ b/atuin-client/src/database.rs
@@ -34,6 +34,7 @@ pub struct OptFilters {
     pub before: Option<String>,
     pub after: Option<String>,
     pub limit: Option<i64>,
+    pub offset: Option<i64>,
 }
 
 pub fn current_context() -> Context {
@@ -361,6 +362,10 @@ impl Database for Sqlite {
             sql.limit(limit);
         }
 
+        if let Some(offset) = filter_options.offset {
+            sql.offset(offset);
+        }
+
         match filter {
             FilterMode::Global => &mut sql,
             FilterMode::Host => sql.and_where_eq("hostname", quote(&context.hostname)),