migrate to multiple sqlite db files ( primary + requests + logs )

scnserver/db/impl/requests/schema/schema_1.ddl

@@ -0,0 +1,22 @@
+
+CREATE TABLE `requests`
+(
+    request_id           INTEGER        PRIMARY KEY,
+    timestamp_created    INTEGER        NOT NULL
+
+) STRICT;
+
+
+CREATE TABLE `meta`
+(
+    meta_key     TEXT       NOT NULL,
+    value_int    INTEGER        NULL,
+    value_txt    TEXT           NULL,
+    value_real   REAL           NULL,
+    value_blob   BLOB           NULL,
+
+    PRIMARY KEY (meta_key)
+) STRICT;
+
+
+INSERT INTO meta (meta_key, value_int) VALUES ('schema', 1)