[feature]: Increase Asset Channel Funding Output Size

[dstadulis]

Background

As discussed in #888, taproot asset channels will encounter premature exhaustion. While various solutions are available, many require diligence to engineer securely.

Rather the hastily develop the long-term solution, it is proposed to increase the channel funding output size to 100k sats. This will create a Lightning Network channel of sufficient size to reduce the frequency of channel exhaustion while also maintaining a measured, defensive security posture as #888 is addressed.

• Improve user experience by minimizing the need for rebalancing
• Strike a balance between providing a usable channel size and maintaining a defensive posture with respect to Bitcoin

Implementation TODOs

• Update the channel funding logic to create an output size of 100k sats
• Add validation and testing which might have changed due to the increased size

Acceptance Criteria:

• A user can create/route 300 HTLCs without needing to rebalance the sats in their channel

[dstadulis]

Commit d1c8d63 has the 100k size