fix build

Author: himanshuchawla009

src/plugins/SessionSigGenerator/index.ts

@@ -0,0 +1,2 @@
+export * from "./DefaultSessionSigGenerator";
+export * from "./ISessionSigGenerator";

src/plugins/Signer/index.ts

@@ -0,0 +1,2 @@
+export * from "./DefaultSigner";
+export * from "./ISigner";

src/plugins/index.ts

@@ -1,3 +1,2 @@
-export * from "./DefaultSessionSigGenerator";
-export * from "./SessionSigGenerator/ISessionSigGenerator";
-export * from "./Signer/ISigner";
+export * from "./SessionSigGenerator";
+export * from "./Signer";