Added descriptions for rpc command parameters
This also performs the following fixes:
1. delforward parameters are compulsory (required).
2. disableinvoicerequest request added `added` field.
3. invoice request order fixed (label then description, not vice-versa!).
4. listpeers log levels are a proper enum
5. description parameter documented for sendonion requests.
6. deprecatred amount_msat removed from sendpay request.
7. sendpay request partid type fixed to u64 (was u16!)
8. sendpay request localinvreqid type tightened to hash (was hex)
9. sendpay request payment_metadata and description fields documented.
10. sendpsbt request reserve type fixed to u32 (was boolean)
11. utxopsbt request satoshi type fixed to msat_or_all (was msat)
12. withdraw request parameter satoshi is compulsory (required)
13. fundchannel_start request amount is sat, not msat_or_all.
14. openchannel_init request amount is sat, not msat
15. openchannel_init close_to is a string, not hex.
16: invoice labels can be strings OR numbers.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rune functionality moved into core from commando plugin.
Changelog-Added: JSON-RPC: `checkrune`: check rune validity for authorization; `createrune` to create/modify rune; `listrunes` to list existing runes; `blacklistrune` to revoke permission of rune
Changelog-Deprecated: JSON-RPC: `commando-rune`, `commando-listrunes` and `commando-blacklist`.
No-schema-diff-check
This avoids having to escape | or &, though we still allow that for
the deprecation period.
To detect deprecated usage, we insist that alternatives are *always*
an array (which could be loosened later), but that also means that
restrictions must *always* be an array for now.
Before:
```
# invoice, description either A or B
lightning-cli commando-rune '["method=invoice","pnamedescription=A|pnamedescription=B"]'
# invoice, description literally 'A|B'
lightning-cli commando-rune '["method=invoice","pnamedescription=A\\|B"]'
```
After:
```
# invoice, description either A or B
lightning-cli commando-rune '[["method=invoice"],["pnamedescription=A", "pnamedescription=B"]]'
# invoice, description literally 'A|B'
lightning-cli commando-rune '[["method=invoice"],["pnamedescription=A|B"]]'
```
Changelog-Deprecated: JSON-RPC: `commando-rune` restrictions is always an array, each element an array of alternatives. Replaces a string with `|`-separators, so no escaping necessary except for `\\`.
