Add a custom lockup account to hold locked tokens (#72)

Part of https://www.notion.so/Lockup-LPS-tokens-into-a-module-account-1f2a6b22d472802cbb35e8ce052d22ca

- Added a command to create the custom lockup account in genesis:
  ```bash
  laconicd genesis add-genesis-lockup-account <account_name> <distribution-json-file> <coin>[,<coin>...]
  ```

Reviewed-on: cerc-io/laconicd#72
Co-authored-by: Prathamesh Musale <prathamesh.musale0@gmail.com>
Co-committed-by: Prathamesh Musale <prathamesh.musale0@gmail.com>

Makefile

@@ -43,7 +43,7 @@ build-linux:
 
 $(BUILD_TARGETS): go.sum $(BUILDDIR)/
 	@echo "--> installing laconicd"
-	go $@ $(BUILD_FLAGS) $(BUILD_ARGS) ./...
+	go $@ $(BUILD_FLAGS) $(BUILD_ARGS) ./cmd/laconicd
 
 $(BUILDDIR)/:
 	mkdir -p $(BUILDDIR)/