AvalancheGo Linter integration

[alarso16]

The avalanchego linter is applied on all Ava Labs owned files in this repo, but not all linters can be applied. Because it previously adhered only to a weaker linter, adding all linters would cause it to fail. Here are all the linters currently unused from .avalanche-golangci.yml:

• depguard
• errcheck
• forbidigo (must do depguard first, or add handling for assert cases)
  • t.Fatal
  • require.Error and require.ErrorContains
  • Remaining
• gocritic
• gosec
• nilerr
• prealloc
• predeclared
• revive
• staticcheck
• testifylint

Each of these changes should be reflected in coreth prior to subnet-evm to keep the repos synced in properly.

[JonathanOppenheimer]

nilerr: #1182

[JonathanOppenheimer]

predeclared: #1183

[JonathanOppenheimer]

gocritic: #1184

[JonathanOppenheimer]

staticcheck: #1197

[JonathanOppenheimer]

testifylint: #1198