fix: yr check should notify the users of all errors

[tlansec]

yr check now notifies the user of all the errors it encounters rather than just the first one:

➜  ~/Documents/gitcontrib/yara-x git:(main) ✗ target/debug/yr.exe -C tltest/test.toml check tltest/lol.yar
error[E038]: required metadata is missing
 --> tltest/lol.yar:1:6
  |
1 | rule ayy : APT AYY{
  |      ^^^ required metadata `date` not found
error[E038]: required metadata is missing
 --> tltest/lol.yar:1:6
  |
1 | rule ayy : APT AYY{
  |      ^^^ required metadata `severity` not found
error[E039]: rule name does not match regex `^[A-Z][a-zA-Z0-9]+_[A-Z][a-zA-Z0-9_]+$`
 --> tltest/lol.yar:1:6
  |
1 | rule ayy : APT AYY{
  |      ^^^ this rule name does not match regex `^[A-Z][a-zA-Z0-9]+_[A-Z][a-zA-Z0-9_]+$`
error[E038]: required metadata is missing
 --> tltest/lol.yar:1:6
  |
1 | rule ayy : APT AYY{
  |      ^^^ required metadata `author` not found
[ FAIL ] tltest/lol.yar
0 file(s) ok. warnings: 0. errors: 4.

[google-cla]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

View this failed invocation of the CLA check for more information.

For the most up to date status, view the checks section at the bottom of the pull request.

[tlansec]

Hmm - it looks like its breaking the tests? I'll look into that tomorrow :(.