all: on-chain oracle checkpoint syncing (#19543)

* all: implement simple checkpoint syncing

cmd, les, node: remove callback mechanism

cmd, node: remove callback definition

les: simplify the registrar

les: expose checkpoint rpc services in the light client

les, light: don't store untrusted receipt

cmd, contracts, les: discard stale checkpoint

cmd, contracts/registrar: loose restriction of registeration

cmd, contracts: add replay-protection

all: off-chain multi-signature contract

params: deploy checkpoint contract for rinkeby

cmd/registrar: add raw signing mode for registrar

cmd/registrar, contracts/registrar, les: fixed messages

* cmd/registrar, contracts/registrar: fix lints

* accounts/abi/bind, les: address comments

* cmd, contracts, les, light, params: minor checkpoint sync cleanups

* cmd, eth, les, light: move checkpoint config to config file

* cmd, eth, les, params: address comments

* eth, les, params: address comments

* cmd: polish up the checkpoint admin CLI

* cmd, contracts, params: deploy new version contract

* cmd/checkpoint-admin: add another flag for clef mode signing

* cmd, contracts, les: rename and regen checkpoint oracle with abigen

internal/web3ext/web3ext.go

@@ -32,6 +32,7 @@ var Modules = map[string]string{
 	"shh":        ShhJs,
 	"swarmfs":    SwarmfsJs,
 	"txpool":     TxpoolJs,
+	"les":        LESJs,
 }
 
 const ChequebookJs = `
@@ -760,3 +761,28 @@ web3._extend({
 	]
 });
 `
+
+const LESJs = `
+web3._extend({
+	property: 'les',
+	methods: 
+	[
+		new web3._extend.Method({
+			name: 'getCheckpoint',
+			call: 'les_getCheckpoint',
+			params: 1
+		}),
+	],
+	properties: 
+	[
+		new web3._extend.Property({
+			name: 'latestCheckpoint',
+			getter: 'les_latestCheckpoint'
+		}),
+		new web3._extend.Property({
+			name: 'checkpointContractAddress',
+			getter: 'les_getCheckpointContractAddress'
+		}),
+	]
+});
+`