feat: replace several files with a sqlite db (#3128)

These files have been known to have corruption issues. SQLite will
perform better across filesystems for reads/writes across threads, and
will lock as expected.

I've also put the session file in there, though I'm 50/50 on it - I'll
be replacing it with keyring storage asap anyway.

The key file is _not_ included. It should ~never be changed, and should
be easy for the user to secure + manage themselves

In the future, instead of creating more files, we can just use this as a
kv store

Resolves https://github.com/atuinsh/atuin/issues/2336, resolves
https://github.com/atuinsh/atuin/issues/1650

## Checks
- [ ] I am happy for maintainers to push small adjustments to this PR,
to speed up the review cycle
- [ ] I have checked that there are no existing pull requests for the
same thing

1 files changed, 17 insertions, 0 deletions

diff --git a/crates/atuin-client/src/settings/meta.rs b/crates/atuin-client/src/settings/meta.rs
new file mode 100644
index 00000000..108d74ec
--- /dev/null
+++ b/crates/atuin-client/src/settings/meta.rs
@@ -0,0 +1,17 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub struct Settings {
+    pub db_path: String,
+}
+
+impl Default for Settings {
+    fn default() -> Self {
+        let dir = atuin_common::utils::data_dir();
+        let path = dir.join("meta.db");
+
+        Self {
+            db_path: path.to_string_lossy().to_string(),
+        }
+    }
+}