feat: add enabled constant var getter for extensions

src/middleware/extensions/SharedVaults.sol

@@ -9,6 +9,8 @@ import {BaseMiddleware} from "../BaseMiddleware.sol";
  * @dev Extends BaseMiddleware to provide access control for vault management functions
  */
 abstract contract SharedVaults is BaseMiddleware {
+    bool public constant SharedVaultsEnabled = true;
+
     /**
      * @notice Registers a new shared vault
      * @param sharedVault The address of the vault to register

src/middleware/extensions/Subnetworks.sol

@@ -11,6 +11,8 @@ import {BaseMiddleware} from "../BaseMiddleware.sol";
  * @dev Extends BaseMiddleware to provide access control for subnetwork management functions
  */
 abstract contract Subnetworks is BaseMiddleware {
+    bool public constant SubnetworksEnabled = true;
+
     /**
      * @notice Registers a new subnetwork
      * @param subnetwork The ID of the subnetwork to register

src/middleware/extensions/access-managers/NoAccessManager.sol

@@ -9,6 +9,8 @@ import {BaseMiddleware} from "../../BaseMiddleware.sol";
  * @dev Implements BaseMiddleware and always reverts on access checks
  */
 abstract contract NoAccessManager is BaseMiddleware {
+    bool public constant NoAccessManagerEnabled = true;
+
     /**
      * @notice Error thrown when access is denied
      */

src/middleware/extensions/access-managers/OwnableAccessManager.sol

@@ -9,6 +9,8 @@ import {BaseMiddleware} from "../../BaseMiddleware.sol";
  * @dev Implements BaseMiddleware with owner-based access control
  */
 abstract contract OwnableAccessManager is BaseMiddleware {
+    bool public constant OwnableAccessManagerEnabled = true;
+
     /**
      * @notice Error thrown when a non-owner address attempts to call a restricted function
      * @param sender The address that attempted the call

src/middleware/extensions/access-managers/OzAccessManaged.sol

@@ -11,11 +11,13 @@ import {BaseMiddleware} from "../../BaseMiddleware.sol";
  * @dev Implements BaseMiddleware with OpenZeppelin's AccessManagedUpgradeable functionality
  */
 abstract contract OzAccessManaged is BaseMiddleware, AccessManagedUpgradeable {
+    bool public constant OzAccessManagedEnabled = true;
     /**
      * @notice Initializes the contract with an authority address
      * @param authority The address to set as the access manager authority
      * @dev Can only be called during initialization
      */
+
     function __OzAccessManaged_init(
         address authority
     ) internal onlyInitializing {

src/middleware/extensions/capture-timestamps/EpochCapture.sol

@@ -5,6 +5,8 @@ import {Time} from "@openzeppelin/contracts/utils/types/Time.sol";
 import {BaseMiddleware} from "../../BaseMiddleware.sol";
 
 abstract contract EpochCapture is BaseMiddleware {
+    bool public constant EpochCaptureEnabled = true;
+
     struct EpochCaptureStorage {
         uint48 startTimestamp;
         uint48 epochDuration;

src/middleware/extensions/capture-timestamps/TimestampCapture.sol

@@ -5,6 +5,8 @@ import {Time} from "@openzeppelin/contracts/utils/types/Time.sol";
 import {BaseMiddleware} from "../../BaseMiddleware.sol";
 
 abstract contract TimestampCapture is BaseMiddleware {
+    bool public constant TimestampCaptureEnabled = true;
+
     /* 
      * @notice Returns the current timestamp minus 1 second.
      * @return timestamp The current timestamp minus 1 second.

src/middleware/extensions/operators/ForcePauseSelfRegisterOperators.sol

@@ -9,6 +9,8 @@ import {SelfRegisterOperators} from "./SelfRegisterOperators.sol";
  * @dev Implements force pause functionality and prevents unpausing of force-paused operators
  */
 abstract contract ForcePauseSelfRegisterOperators is SelfRegisterOperators {
+    bool public constant ForcePauseSelfRegisterOperatorsEnabled = true;
+
     struct ForcePauseSelfRegisterOperatorsStorage {
         mapping(address => bool) forcePaused;
         mapping(address => mapping(address => bool)) forcePausedVault;

src/middleware/extensions/operators/Operators.sol

@@ -9,6 +9,8 @@ import {BaseMiddleware} from "../../BaseMiddleware.sol";
  * @dev Provides core operator management functionality with hooks for customization
  */
 abstract contract Operators is BaseMiddleware {
+    bool public constant OperatorsEnabled = true;
+
     /**
      * @notice Registers a new operator with an optional vault association
      * @param operator The address of the operator to register

src/middleware/extensions/operators/SelfRegisterOperators.sol

@@ -12,6 +12,8 @@ import {SignatureChecker} from "@openzeppelin/contracts/utils/cryptography/Signa
  * @dev Extends BaseMiddleware, BaseSig, and EIP712Upgradeable to provide signature-based operator management
  */
 abstract contract SelfRegisterOperators is BaseMiddleware, BaseSig, EIP712Upgradeable {
+    bool public constant SelfRegisterOperatorsEnabled = true;
+
     error InvalidSignature();
 
     // EIP-712 TypeHash constants

src/middleware/extensions/sigs/ECDSASig.sol

@@ -10,6 +10,8 @@ import {ECDSA} from "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
  * @dev Implements BaseSig interface using OpenZeppelin's ECDSA library
  */
 abstract contract ECDSASig is BaseSig {
+    bool public constant ECDSASigEnabled = true;
+
     using ECDSA for bytes32;
 
     /**

src/middleware/extensions/sigs/Ed25519Sig.sol

@@ -10,6 +10,8 @@ import {BaseSig} from "./BaseSig.sol";
  * @dev Implements BaseSig interface using Ed25519 signature verification
  */
 abstract contract Ed25519Sig is BaseSig {
+    bool public constant Ed25519SigEnabled = true;
+
     /**
      * @notice Verifies that a signature was created by the owner of a key
      * @param operator The address of the operator that owns the key