feat: move opkssh and warpgate into plugins (C3)

plugins/opkssh/migrations/sqlite/0001_adopt_opkssh_tokens.sql

@@ -0,0 +1,21 @@
+-- opkssh 0001: adopt_opkssh_tokens
+-- Generated by termix-plugin migrations. Review before committing.
+
+CREATE TABLE IF NOT EXISTS "opkssh_tokens" (
+  "id" integer PRIMARY KEY AUTOINCREMENT,
+  "user_id" text NOT NULL,
+  "host_id" integer NOT NULL,
+  "ssh_cert" text NOT NULL,
+  "private_key" text NOT NULL,
+  "email" text,
+  "sub" text,
+  "issuer" text,
+  "audience" text,
+  "created_at" text NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  "expires_at" text NOT NULL,
+  "last_used" text,
+  FOREIGN KEY ("user_id") REFERENCES "users" ("id") ON DELETE CASCADE,
+  FOREIGN KEY ("host_id") REFERENCES "ssh_data" ("id") ON DELETE CASCADE
+);
+CREATE UNIQUE INDEX IF NOT EXISTS "idx_opkssh_tokens_user_host" ON "opkssh_tokens" ("user_id", "host_id");
+ALTER TABLE "opkssh_tokens" RENAME TO "p_opkssh_tokens";