More descriptive manifest resolve error

[YaroShkvorets]

The other day with @marcusrein we've ran into an issue with Explorer for one of the chains supplying slightly invalid ABI (one of the required fields was being lost during serialization).

graph init would scaffold subgraph for this ABI but graph deploy request to Graph Node would fail with a very generic error:

✖ Failed to deploy to Graph node http://localhost:8020/: subgraph resolve error: resolve error: failed to resolve data source Contract with source_address Some(0x88b8e2161dedc77ef4ab7585569d2415a1c1055d) and source_start_block 4900000

Deployment: QmejLsgNNWCWT25HqVsgWZ6VgDBWpaR7RijQeYdcDZn6k3

This PR makes error message more descriptive for the subgraph developer:

✖ Failed to deploy to Graph node http://localhost:8020/: subgraph resolve error: resolve error: failed to resolve data source Contract with source_address Some(0x88b8e2161dedc77ef4ab7585569d2415a1c1055d) and source_start_block 4900000: failed to resolve mapping /ipfs/QmWmftR3RhDtRJpeK8JhgcP1Bys8cwMCwpMs6LH2noh1A3: failed to load ABI Contract: Serialization error: missing fieldanonymousat line 169 column 3: missing field "anonymous" at line 169 column 3

[YaroShkvorets]

It appears to be an issue with multiple explorers, i.e. all oklink.com explorers(50+ chains) corrupt ABI by eating "anonymous" field. So if you copy-paste ABI from their UI and build subgraph from it, you are out of luck with that deployment error.

https://www.oklink.com/xlayer/token/0x1e4a5963abfd975d8c9021ce480b42188849d41d?tab=contract