setting up CODEOWNERS

.github/CODEOWNERS

@@ -1,22 +1 @@
-# Lines starting with '#' are comments.
-# Each line is a file pattern followed by one or more owners.
-
-accounts/usbwallet              @karalabe
-accounts/scwallet               @gballet
-accounts/abi                    @gballet @MariusVanDerWijden
-cmd/clef                        @holiman
-consensus                       @karalabe
-core/                           @karalabe @holiman @rjl493456442
-eth/                            @karalabe @holiman @rjl493456442
-eth/catalyst/                   @gballet
-eth/tracers/                    @s1na
-graphql/                        @s1na
-les/                            @zsfelfoldi @rjl493456442
-light/                          @zsfelfoldi @rjl493456442
-node/                           @fjl
-p2p/                            @fjl @zsfelfoldi
-rpc/                            @fjl @holiman
-p2p/simulations                 @fjl
-p2p/protocols                   @fjl
-p2p/testing                     @fjl
-signer/                         @holiman
+*  @ethereum-optimism/op-geth-maintainers