Add support for Falcon: post-quantum safe asymmetric cryptography

[jasny]

This pull request introduces Falcon cryptographic support, updates to dependencies, and various improvements to the README.md documentation. The most significant changes are outlined below:

New Feature:

• Added Falcon cryptographic support:
  • Implemented the Falcon class with methods for key pair generation, signing, and verification. (src/main/java/com/ltonetwork/seasalt/sign/Falcon.java)
  • Added tests for the Falcon class to ensure correct functionality. (src/test/java/sign/FalconTest.java)

Documentation:

• Updated README.md to include Falcon in the list of supported algorithms and provided example usage for Falcon. [1] [2]
• Corrected minor typos and formatting issues in README.md. [1] [2] [3]

Dependency Updates:

• Updated project version to 0.0.11 in pom.xml.
• Updated Bouncy Castle dependency to version 1.80 and switched to bcprov-jdk18on.

[jasny]

There might be issues with the way bouncy castle encodes the signature. It's important that this is solved. See bcgit/bc-java#2015