fix: Improve mocks generation

[Kynea0b]

Description

Mockery was supposed to be installed in the local environment, but that assumption is not necessarily guaranteed. It is something that a repository should guarantee.

In this PR, a fix was made to manage the mockery package with go.mod and execute it directly with script.

The path is specified as a relative path according to Tendermint as follows.
The reason is to avoid conflicts during backporting.

Ex.

//go:generate ../scripts/mockery_generate.sh [interface name]

This PR exists in tendermint/tendermint, but since Go 1.17 we can go run external packages directly, so we don't need to use docker.

Main:
tendermint/tendermint#9094

Two Mockery improvement PR exist in the 34.x version, but cherry-pick is not desirable because it includes more than just Mock changes.

tendermint/tendermint#8863
tendermint/tendermint#9114

This PR is for making Mockery work correctly.

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

Merging #604 (5496309) into main (c80f1b7) will decrease coverage by 0.06%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #604      +/-   ##
==========================================
- Coverage   66.31%   66.25%   -0.06%     
==========================================
  Files         277      277              
  Lines       36969    36969              
==========================================
- Hits        24515    24494      -21     
- Misses      10688    10713      +25     
+ Partials     1766     1762       -4     

Impacted Files	Coverage Δ
abci/client/client.go	80.85% <ø> (ø)
abci/client/grpc_client.go	69.37% <ø> (ø)
abci/client/local_client.go	99.20% <ø> (ø)
abci/client/socket_client.go	72.96% <ø> (ø)
abci/example/kvstore/helpers.go	100.00% <ø> (ø)
abci/example/kvstore/kvstore.go	73.83% <ø> (ø)
abci/example/kvstore/persistent_kvstore.go	50.00% <ø> (ø)
abci/types/application.go	0.00% <ø> (ø)
abci/types/pubkey.go	0.00% <ø> (ø)
behaviour/peer_behaviour.go	75.00% <ø> (ø)
... and 118 more

... and 3 files with indirect coverage changes