Bump lnc-core version and add Taproot Assets support

[jamaljsr]

Updates the default WASM file url to v0.2.5-alpha and exposes the tapd API via the LNC class.

Note: CI will fail until the new version of lnc-core is published to NPM.

To test these changes:

1. Checkout Add Taproot Assets support lnc-core#17 and run yarn && yarn link && yarn build in that repo
2. Checkout this PR and run yarn && yarn link @lightninglabs/lnc-core && yarn build in the root of this repo
3. Change to the demos/kitchen-sink dir and run yarn && yarn link @lightninglabs/lnc-web && yarn start. The demo site should open in your browser.
4. Grab a pairing phrase from a litd node running the master branch since subservers: register taproot assets universe servers lightning-terminal#572 is needed for the tapd universe RPCs to work.
5. Update demos/kitchen-sink/src/App.js with the pairing phrase
6. In the demo site try to Connect and call listAssets to confirm the tapd RPC is functional.

[jbrill]

I'm getting the following error on the kitchen sink demo. Have you ran into this before?

[jamaljsr]

Ah my bad.. I made a typo in the test instructions. In yarn && yarn link @lightninglabs/lnc-core && yarn start change lnc-core to lnc-web.

[jbrill]

Oh nice -- that works!

[jbrill]

Can confirm the RPCs are functional!

wasm [info] The WASM client is connected to the server +343ms
index.js:2 wasm [debug] taprpc.TaprootAssets.ListAssets request +3s undefined
index.js:2 2023-06-16 15:23:15.238 [INF] WASM: Calling 'taprpc.TaprootAssets.ListAssets' on RPC with request {}
index.js:2 wasm [debug] taprpc.TaprootAssets.ListAssets response +50ms {assets: Array(0)}
App.js:88 {assets: Array(0)}
index.js:2 wasm [debug] mintrpc.Mint.ListBatches request +4s undefined
index.js:2 2023-06-16 15:23:18.937 [INF] WASM: Calling 'mintrpc.Mint.ListBatches' on RPC with request {}
index.js:2 wasm [debug] mintrpc.Mint.ListBatches response +11ms {batches: Array(0)}
App.js:93 {batches: Array(0)}
index.js:2 wasm [debug] universerpc.Universe.ListFederationServers request +1s undefined
index.js:2 2023-06-16 15:23:20.106 [INF] WASM: Calling 'universerpc.Universe.ListFederationServers' on RPC with request {}
index.js:2 wasm [debug] universerpc.Universe.ListFederationServers response +31ms {servers: Array(0)}
App.js:98 {servers: Array(0)}

[jamaljsr]

lnc-core v0.2.5-alpha has been published. Updated this PR to use the package from the NPM registry.