feat(db): add postgresql support

internal/assets/migrations/postgres/000005_oidc_session.up.sql

@@ -0,0 +1,27 @@
+CREATE TABLE IF NOT EXISTS "oidc_codes" (
+    "sub"          TEXT   NOT NULL UNIQUE,
+    "code_hash"    TEXT   NOT NULL PRIMARY KEY,
+    "scope"        TEXT   NOT NULL,
+    "redirect_uri" TEXT   NOT NULL,
+    "client_id"    TEXT   NOT NULL,
+    "expires_at"   BIGINT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS "oidc_tokens" (
+    "sub"                      TEXT   NOT NULL UNIQUE,
+    "access_token_hash"        TEXT   NOT NULL PRIMARY KEY,
+    "refresh_token_hash"       TEXT   NOT NULL,
+    "scope"                    TEXT   NOT NULL,
+    "client_id"                TEXT   NOT NULL,
+    "token_expires_at"         BIGINT NOT NULL,
+    "refresh_token_expires_at" BIGINT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS "oidc_userinfo" (
+    "sub"                TEXT   NOT NULL PRIMARY KEY,
+    "name"               TEXT   NOT NULL,
+    "preferred_username" TEXT   NOT NULL,
+    "email"              TEXT   NOT NULL,
+    "groups"             TEXT   NOT NULL,
+    "updated_at"         BIGINT NOT NULL
+);