feat(checkout, clone, push): Add 'onPrePush' and 'onPostCheckout'

[CoalZombik]

I'm adding a parameter to an existing command X:

• add parameter to the function in src/api/X.js (and src/commands/X.js if necessary)
• document the parameter in the JSDoc comment above the function
• add a test case in __tests__/test-X.js if possible
• if this is your first time contributing, run npm run add-contributor and follow the prompts to add yourself to the README
• squash merge the PR with commit message "feat(X): Added 'bar' parameter"
• add page to the Docs Sidebar website/sidebars.json

Closes #1186

I added new documentation website/sidebars.json, but I don't know how to handle versioned variants of documentation.

[jcubic]

Few comments

[jcubic]

Few comments

[jcubic]

Sorry for late reply. Did you change something? I didn't get any notification from GitHub. And you didn't reply to my comments.

[CoalZombik]

Yes, I applied changes that you suggested.

Sorry, it probably my fault, I expected that re-requesting a review will send you a notification.

[jcubic]

Hey, sorry for late response, I totally forget about this Review. I've found my old notes where I did add a link to the PR.

Looks good.