feat: convert secret-sources into a plugin (B20)

plugins/secret-sources/migrations/sqlite/0001_adopt_secret_sources.sql

@@ -0,0 +1,16 @@
+-- secret-sources 0001: adopt_secret_sources
+-- Generated by termix-plugin migrations. Review before committing.
+
+CREATE TABLE IF NOT EXISTS "secret_sources" (
+  "id" text PRIMARY KEY NOT NULL,
+  "user_id" text NOT NULL,
+  "name" text NOT NULL,
+  "kind" text NOT NULL DEFAULT 'onepassword-connect',
+  "base_url" text NOT NULL,
+  "shared" integer NOT NULL DEFAULT 0,
+  "created_at" text NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  "updated_at" text NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  FOREIGN KEY ("user_id") REFERENCES "users" ("id") ON DELETE CASCADE
+);
+CREATE INDEX IF NOT EXISTS "idx_secret_sources_user" ON "secret_sources" ("user_id");
+ALTER TABLE "secret_sources" RENAME TO "p_secret_sources_sources";