Add hold plugin

Author: michael1011

.gitmodules

@@ -73,3 +73,6 @@
 [submodule "torq-plugin"]
 	path = torq-plugin
 	url = https://github.com/lncapital/torq-cln-plugin
+[submodule "hold"]
+	path = hold
+	url = https://github.com/BoltzExchange/hold

README.md

@@ -23,6 +23,7 @@ Community curated plugins for Core-Lightning.
 | [feeadjuster][feeadjuster]           | Dynamic fees to keep your channels more balanced                                            | ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Ffeeadjuster_23.11.2.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Ffeeadjuster_24.02.2.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Ffeeadjuster_24.05.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Ffeeadjuster_nightly.json) |
 | [go-lnmetrics.reporter][reporter]    | Collect and report of the lightning node metrics                                            | ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fgo-lnmetrics.reporter_23.11.2.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fgo-lnmetrics.reporter_24.02.2.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fgo-lnmetrics.reporter_24.05.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fgo-lnmetrics.reporter_nightly.json) |
 | [graphql][graphql]                   | Exposes the Core-Lightning API over [graphql][graphql-spec]                                 | ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fgraphql_23.11.2.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fgraphql_24.02.2.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fgraphql_24.05.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fgraphql_nightly.json) |
+| [hold][hold]                         | Hold invoices that do not require the preimage to be known when created                     | ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fhold_23.11.2.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fhold_24.02.2.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fhold_24.05.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fhold_nightly.json) |
 | [holdinvoice][holdinvoice]           | Holds htlcs for invoices until settle or cancel is called (aka Hodlinvoices) via RPC/GRPC   | ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fholdinvoice_23.11.2.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fholdinvoice_24.02.2.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fholdinvoice_24.05.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Fholdinvoice_nightly.json) |
 | [invoice-queue][Lightning-Invoice-Queue]       | Listen to lightning invoices from multiple nodes and send to a redis queue for processing   | ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2FLightning-Invoice-Queue_23.11.2.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2FLightning-Invoice-Queue_24.02.2.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2FLightning-Invoice-Queue_24.05.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2FLightning-Invoice-Queue_nightly.json) |
 | [lightning-qt][lightning-qt]         | A bitcoin-qt-like GUI for lightningd                                                        | ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Flightning-qt_23.11.2.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Flightning-qt_24.02.2.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Flightning-qt_24.05.json) ![](https://img.shields.io/endpoint?url=https%3A%2F%2Flightningd.github.io%2Fplugins%2F.badges%2Flightning-qt_nightly.json) |
@@ -213,6 +214,7 @@ Python plugins developers must ensure their plugin to work with all Python versi
 [go-api]: https://github.com/niftynei/glightning
 [graphql]: https://github.com/nettijoe96/c-lightning-graphql
 [graphql-spec]: https://graphql.org/
+[hold]: https://github.com/BoltzExchange/hold
 [holdinvoice]: https://github.com/daywalker90/holdinvoice
 [java-api]: https://github.com/clightning4j/JRPClightning
 [js-api]: https://github.com/lightningd/clightningjs