docs: Document Python TLS requirements (#12276)

* 🔧 Add simple test script

* 📝 Add documentation

* 🔧 It works, use it

* 🔧 Make the linter happy

* 🔧 Check on bootstrap

* Trivial copyediting

s/operation system/operating system/

script/bootstrap.py

@@ -12,7 +12,7 @@ from lib.config import BASE_URL, PLATFORM, MIPS64EL_SYSROOT_URL, \
                        is_verbose_mode, get_target_arch
 from lib.util import execute, execute_stdout, get_electron_version, \
                      scoped_cwd, download, update_node_modules
-
+from tls import check_tls
 
 SOURCE_ROOT = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
 VENDOR_DIR = os.path.join(SOURCE_ROOT, 'vendor')
@@ -31,6 +31,8 @@ def main():
   if sys.platform == 'cygwin':
     update_win32_python()
 
+  check_tls(args.verbose)
+
   update_submodules()
 
   libcc_source_path = args.libcc_source_path