update store schema when configuring corrosion, create machines table

internal/machine/store/schema.sql

@@ -0,0 +1,8 @@
+CREATE TABLE machines
+(
+    id   TEXT NOT NULL PRIMARY KEY,
+    name TEXT AS (json_extract(info, '$.name')),
+    info TEXT NOT NULL DEFAULT '{}' CHECK (json_valid(info))
+);
+
+CREATE INDEX idx_machines_name ON machines (name);