Refactor Sector3Governor.sol

The Sector3Governor contract now directly inherits from GovernorVotes, GovernorVotesQuorumFraction, and GovernorCountingSimple.
Removed the separate inheritance of Governor and GovernorSettings from Sector3Governor, as GovernorVotes already inherits from these contracts.

ref: #70 (review)

contracts/governance/Sector3Governor.sol

@@ -1,16 +1,15 @@
 // SPDX-License-Identifier: MIT
 pragma solidity ^0.8.19;
 
-import "@openzeppelin/contracts/governance/Governor.sol";
-import "@openzeppelin/contracts/governance/extensions/GovernorSettings.sol";
-import "@openzeppelin/contracts/governance/extensions/GovernorCountingSimple.sol";
 import "@openzeppelin/contracts/governance/extensions/GovernorVotes.sol";
 import "@openzeppelin/contracts/governance/extensions/GovernorVotesQuorumFraction.sol";
+import "@openzeppelin/contracts/governance/extensions/GovernorCountingSimple.sol";
+import "@openzeppelin/contracts/governance/extensions/GovernorSettings.sol";
 
-contract Sector3Governor is Governor, GovernorSettings, GovernorCountingSimple, GovernorVotes, GovernorVotesQuorumFraction {
+contract Sector3Governor is GovernorVotes, GovernorVotesQuorumFraction, GovernorCountingSimple {
     constructor(IVotes _token)
         Governor("Sector#3 Governor")
-        GovernorSettings(1 /* 1 block */, 50400 /* ~1 week */, 2049e14 /* 0.2049 */)
+        GovernorSettings(1 /* 1 block */, 50400 /* ~1 week */, 2049e15 /* 2.049 */)
         GovernorVotes(_token)
         GovernorVotesQuorumFraction(1)
     {}