⏪️ Revert removing scripts, only remove `coverage.sh` (#15772)

scripts/format.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+set -x
+
+ruff check fastapi tests docs_src scripts --fix
+ruff format fastapi tests docs_src scripts

scripts/lint.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+set -e
+set -x
+
+mypy fastapi
+ty check
+ruff check fastapi tests docs_src scripts
+ruff format fastapi tests --check

scripts/test-cov-html.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+set -e
+set -x
+
+bash scripts/test-cov.sh --cov-report=term-missing --cov-report=html ${@}