consider adding more linters

[Serpentiel]

What is currently missing?

some important linters are missing which could:

• prevent appearance of future bugs
• fix existing bugs
• improve overall performance and security of the provider

How could this be improved?

add the following linters:

• durationcheck (check for two durations multiplied together)
• errorlint (errorlint is a linter for that can be used to find code that will cause problems with the error wrapping scheme introduced in Go 1.13.)
• forbidigo (Forbids identifiers)
• forcetypeassert (finds forced type assertions)
• goconst (Finds repeated strings that could be replaced by a constant)
• gocyclo (Computes and checks the cyclomatic complexity of functions)
• gomnd (An analyzer to detect magic numbers.)
• gosec (Inspects source code for security problems)
• prealloc (Finds slice declarations that could potentially be pre-allocated)
• typecheck (Like the front-end of a Go compiler, parses and type-checks Go code)

Is this a feature you would work on yourself?

• [ ] I plan to open a pull request for this feature.

[rominf]

It looks like forcetypeassert is not needed: it's not developed anymore, and the same functionality is provided by errcheck.