Enable almost all Flake8 checks (#548)

* fix W391

* E262

* E703

* W293

* some E

* E231

* some more E

* E225

* more E

* E252

* no tabs

* more tabs

* E701

* uds.py

* almost all of them

* only e265 left

* not sure why this is triggering on commented out code

* ignore esptool

python/esptool.py

@@ -18,6 +18,8 @@
 # this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
 # Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
+# flake8: noqa
+
 import argparse
 import hashlib
 import inspect