Add development scripts

[WillAbides]

closes#2927

Scripts

This adds the four scripts proposed in #2927.

The scripts all follow the basic pattern of iterating over the go modules in the repo and running the appropriate commands in each directory. Because of this, there is some duplicate code. I chose to keep it this way because deduping it added complexity, and I wanted to keep these scripts as simple as possible to understand.

The only dependencies for these scripts are git and a posix shell.

• script/fmt.sh is the simplest one. It runs go fmt ./... in each module directory.

• script/generate.sh runs go generate ./... and go mod tidy -compat '1.17' in each module directory. It also has a --check flag which causes it to run on a temporary git worktree and fail if any new diff is created.

• script/lint.sh runs golangci-lint run on each module then runs script/generate.sh --check. It installs golangci-lint in bin/ if needed.

• script/test.sh runs go test in each module directory. If arguments are provided, those are used as arguments for go test, otherwise it uses the default arguments -race -covermode atomic ./...

script/lint.sh and script/test.sh skip the module in example/newreposecretwithlibsodium because it cannot compile unless libsodium is available.

CONTRIBUTING.md

• Updates CONTRIBUTING.md to include the new scripts and generally updates the "Submitting a patch" section.

Workflow changes

linter.yml

• Runs script/lint.sh instead of using the golangci-lint action.
• No longer uses a run matrix. Because script/lint.sh iterates over modules, I was able to remove the run matrix. We now only run one lint job instead of four.
• Stale generated files will now be reported on lint runs because script/lint.sh validates go generate.

tests.yml

• Runs script/test.sh instead of running go test multiple times in separate steps.
• No longer checks go generate now that it is checked in lint.
• Only sets -coverprofile when codecov will be updated because -coverprofile prevents cached test results from being used.
• Sets default shell to bash so that it doesn't need to be specified on each step.

Misc changes

Running script/test.sh exposed an issue where the examples module won't compile on Windows because syscall.Stdin is typed differently on Windows. I resolved this by replacing syscall.Stdin with int(os.Stdin.Fd())

[codecov]

Codecov Report

Merging #2928 (13c9ed3) into master (b45ef89) will not change coverage.
The diff coverage is n/a.

@@ Coverage Diff @@## master #2928 +/- ##
=======================================
Coverage 98.17% 98.17% =======================================
Files 143 143 Lines 12597 12597 =======================================
Hits 12367 12367 Misses 156 156 Partials 74 74 

[gmlewis]

Would it bother/upset you if I asked you to rename all the bash scripts in the "scripts" directory to have a ".sh" suffix?
This is a convention I've been using for decades, and I'd love to continue that, but won't be heart-broken if you object.

[WillAbides]

I can go either way on script names. I noticed .gitignore has a *.sh line. I'll remove that altogether because I suspect it isn't necessary anymore. If that causes a problem I can restore it and add !/scripts/*.sh

[gmlewis]

I can go either way on script names. I noticed .gitignore has a *.sh line. I'll remove that altogether because I suspect it isn't necessary anymore. If that causes a problem I can restore it and add !/scripts/*.sh

Ah, yes, please leave the *.sh and add your workaround, as I have a slew of hacky bash scripts in the top-level that help me maintain this repo. Thank you! 😄

[gmlewis]

This looks great, @WillAbides !
Thank you so much for doing this! I think it will help users and maintainers alike.

While you are touching parts of CONTRIBUTING.md, I hope you don't mind if I ask you to tweak a couple things that aren't actually related to your PR? That would be awesome.

[gmlewis]

Excellent, @WillAbides - thank you!
LGTM.

Awaiting second LGTM+Approval from any other contributor to this repo before merging.

[gmlewis]

Thank you, @valbeat !

@WillAbides - do you want to change "scripts" back to your original "script" before I merge?

[WillAbides]

Thanks. I'll update it in the morning.

[WillAbides]

@gmlewis It's ready to go now

[gmlewis]

Thank you, @WillAbides !
LGTM.
Merging.