[suggestion] Update executor config in the genesis block

[0x009922]

Description

TL;DR: drop inline executor support; rename field to executor_file.

Genesis block contains executor field, which might either represent an inline base64-encoded WASM blob, or a file path to the WASM blob:

https://github.com/hyperledger/iroha/blob/964476722e2a219becaacdb3676ca058ec5748cd/configs/swarm/genesis.json#L185

This is backed by the ExecutorMode struct:

https://github.com/hyperledger/iroha/blob/964476722e2a219becaacdb3676ca058ec5748cd/genesis/src/lib.rs#L122-L131

As we discussed in #4239, executor field with file path should be renamed to executor_file for uniformity.

In addition to that, I propose to remove inline executor mode. It was effectively deprecated a long time ago: there was a warning printed when the inline mode is used (cannot find references for that). The reason is that inlining WASM blob makes the whole genesis file (1) clunky and (2) hardly reproducible due to WASM compilation intricacies.

[mversic]

In addition to that, I propose to remove inline executor mode

yes, please

[dchidindu5]

I'd like to know if this repo is still very active

[mversic]

I'd like to know if this repo is still very active

Yes it is. You can easily verify this yourself. The main activity is on the iroha2-dev branch. If that is confusing you?