Fix quality issues (#1856)

Fix quality issues (#1856)

* Add .deepsource.toml

* Remove unnecessary comparison with bool

* Remove unnecessary use of slice

* Replace multiple `append`s with one

* Remove unnecessary wrapping of function call

* Fix check for empty string

* Simplify error creation with `fmt.Errorf`

* Fix defers before error check

Signed-off-by: sourya_deepsource <sourya@deepsource.io>
* Remove untrappable `os.Kill` signal

Signed-off-by: sourya_deepsource <sourya@deepsource.io>
* Remove empty else branch

Signed-off-by: sourya_deepsource <sourya@deepsource.io>
* Add missing error check

Signed-off-by: sourya_deepsource <sourya@deepsource.io>
* Merge variable declaration and assignment

Signed-off-by: sourya_deepsource <sourya@deepsource.io>
* Remove unnecessary `nil` check

Signed-off-by: sourya_deepsource <sourya@deepsource.io>
* Revert changes to generated files

Signed-off-by: sourya_deepsource <sourya@deepsource.io>
* Remove .deepsource.toml

Signed-off-by: sourya_deepsource <sourya@deepsource.io>
Co-authored-by: DeepSource Bot <bot@deepsource.io>
Co-authored-by: deepsource-autofix[bot] <62050782+deepsource-autofix[bot]@users.noreply.github.com>