Output license info when binaries are passed -version

Consolidate to outputting the licensing info when we pass -version to a binary,
i.e bitcoind -version:
```bash
itcoin Core version v22.99.0-fc1f355913f6-dirty
Copyright (C) 2009-2022 The Bitcoin Core developers

Please contribute if you find Bitcoin Core useful. Visit
<https://bitcoincore.org/> for further information about the software.
The source code is available from <https://github.com/bitcoin/bitcoin>.

This is experimental software.
Distributed under the MIT software license, see the accompanying file COPYING
or <https://opensource.org/licenses/MIT>
```

src/bitcoin-tx.cpp

@@ -102,7 +102,10 @@ static int AppInitRawTx(int argc, char* argv[])
     if (argc < 2 || HelpRequested(gArgs) || gArgs.IsArgSet("-version")) {
         // First part of help message is specific to this utility
         std::string strUsage = PACKAGE_NAME " bitcoin-tx utility version " + FormatFullVersion() + "\n";
-        if (!gArgs.IsArgSet("-version")) {
+
+        if (gArgs.IsArgSet("-version")) {
+            strUsage += FormatParagraph(LicenseInfo());
+        } else {
             strUsage += "\n"
                 "Usage:  bitcoin-tx [options] <hex-tx> [commands]  Update hex-encoded bitcoin transaction\n"
                 "or:     bitcoin-tx [options] -create [commands]   Create hex-encoded bitcoin transaction\n"