Error message if colon is missed is highly misleading

If you type a commit message but forget the colon after the type you get the error messages [subject-empty] and [type-empty] which are highly misleading. It might be obvious to an expert user, but to a casual user it really wasn't.

Expected Behavior

echo "test(foo)

bar" | npx --no-install commitlint -V ⧗ input: test(foo)

bar ✖ subject may not be empty [subject-empty] ✖ type may not be empty [type-empty] W warning - missing colon after scope [missing-colon]

✖ found 2 problems, 0 warnings ⓘ Get help: https://github.com/conventional-changelog/commitlint/#what-is-commitlint

Current Behavior

echo "test(foo)

bar" | npx --no-install commitlint -V ⧗ input: test(foo)

bar ✖ subject may not be empty [subject-empty] ✖ type may not be empty [type-empty]

✖ found 2 problems, 0 warnings ⓘ Get help: https://github.com/conventional-changelog/commitlint/#what-is-commitlint

Affected packages

• cli
• core
• prompt
• config-angular

Possible Solution

An additional warning message for any commit which matches the following

• Missing one or both of subject and type
• First non-whitespace character of second word is not ':' or '('
• If first non-whitespace character of second word is '(' then first non-whitespace character after matching ')' is not ':'

Steps to Reproduce (for bugs)

rvb@rosie-laptop:~/standby$ echo "test(foo)

bar" | npx --no-install commitlint -V ⧗ input: test(foo)

bar ✖ subject may not be empty [subject-empty] ✖ type may not be empty [type-empty]

✖ found 2 problems, 0 warnings ⓘ Get help: https://github.com/conventional-changelog/commitlint/#what-is-commitlint

$ echo "test(foo) bar

desc" | npx --no-install commitlint -V ⧗ input: test(foo) bar

desc ✖ subject may not be empty [subject-empty] ✖ type may not be empty [type-empty]

✖ found 2 problems, 0 warnings ⓘ Get help: https://github.com/conventional-changelog/commitlint/#what-is-commitlint

$ echo "test(foo): bar

desc" | npx --no-install commitlint -V ⧗ input: test(foo): bar ✔ found 0 problems, 0 warnings

Your Environment

npx --no-install commitlint -v @commitlint/cli@13.1.0

$ uname -a Linux <removed> 5.13.0-30-generic #33~20.04.1-Ubuntu SMP Mon Feb 7 14:25:10 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

$ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=20.04 DISTRIB_CODENAME=focal DISTRIB_DESCRIPTION="Ubuntu 20.04.4 LTS"

Executable	Version
commitlint --version	@commitlint/cli@13.1.0
git --version	git version 2.25.1
node --version	git version 2.25.1