fix: move from devenv to nix flake

.config/chglog/CHANGELOG.tpl.md

.config/chglog/config.yml

.envrc

.gitlab-ci.yml

.gitlab/issue_templates/rfc.md

.gitlab/issue_templates/thoughts-and-ideas.md

Taskfile.yml

devenv.nix

devenv.yaml

documentation/licenses/github.com/fsnotify/fsnotify/LICENSE

documentation/licenses/github.com/imdario/mergo/LICENSE

...tion/licenses/github.com/magiconair/properties/LICENSE.md

...entation/licenses/github.com/pelletier/go-toml/v2/LICENSE

documentation/licenses/github.com/r3labs/diff/v3/.gitignore

...tation/licenses/github.com/r3labs/diff/v3/CONTRIBUTING.md

documentation/licenses/github.com/r3labs/diff/v3/LICENSE

documentation/licenses/github.com/r3labs/diff/v3/Makefile

documentation/licenses/github.com/r3labs/diff/v3/README.md

...tation/licenses/github.com/r3labs/diff/v3/change_value.go

...ntation/licenses/github.com/r3labs/diff/v3/comparative.go