move linter & isort configs to separate files

.flake8

@@ -0,0 +1,23 @@
+[flake8]
+max-line-length=88
+count=True
+show-source=False
+statistics=True
+exclude=.git, __pycache__,
+filename=*.py
+per-file-ignores=
+    # Disable redefinition warning for exception handlers
+    hyperglass/hyperglass.py:F811
+    # Disable string length warnings so I can actually read the commands
+    hyperglass/configuration/models/commands.py:E501,C0301
+    # Disable string length warnings so I can actually read the messages
+    hyperglass/configuration/models/messages.py:E501,C0301
+    # Disable classmethod warning for validator decorators
+    hyperglass/configuration/models/*.py:N805,E0213,R0903
+    hyperglass/models/*.py:N805,E0213,R0903
+ignore=W503,C0330,R504
+select=B, BLK, C, D, E, F, I, II, N, P, PIE, S, R, W
+disable-noqa=False
+hang-closing=False
+max-complexity=10
+# format=${cyan}%(path)s${reset}:${yellow_bold}%(row)d${reset}:${green_bold}%(col)d${reset}: ${red_bold}%(code)s${reset} %(text)s