Missing information from the ./content/signing page.

[johnnymatthews]

The ./content/signing page lacks clarity on several key aspects. Let's add the following points:

• Specify the required fields for the transaction, signing requirements, and data structures used in transactions.
• Define the purpose, acquisition method, and role of the "constraint pass" in the signing process.
• Provide details on the specific key derivation scheme used to derive the user's key.
• Include a brief summary of the Threshold Signature Scheme within the "Signing" content for better context.
• Elaborate on how malfunctions are distinguished from malicious behavior and describe the slashing mechanism for faulty signers. Also, explain how the signing committee is regenerated after such incidents.
• Address potential security concerns beyond the Noise protocol, such as message integrity, confidentiality, and replay attacks.