Added extra coloring options

[The-EDev]

variables added:

• color-trackers-text: this allows the text of the "tracker" column in the issue list to be the same color as the issue's tracker.
• color-status-text: same as above but for status column.
• color-id-trackers: replaces the color-trackers variable.
• color-id-status: works the same as color-id-trackers, but uses the status colors instead.

status colors added:

• Resolved: Green
• Feedback: Yellow
• Rejected: Dark Red

notes:

• I left the in progress color the same as primary, but feel free to suggest changes.
• The added variables are all set to false by default except color-id-trackers, so it should initially look the same as the default theme.
• I tested the teme changes with redmine 3.4 and 4.0, both of which seemed to work fine.
• I'm not familiar with pull requests so please let me know if i messed up anything :D

Related issue:
#192

[mrliptontea]

Nice work on this! Good job on putting this PR.

Note: I have not tested this yet, will give it a go soon.

For now, I have only some technical notes:

1. Formatting is a bit funky in a few places. If you merge the latest changes from the main repo, I included some changes to run linters via git pre-commit hooks. Also, they should now run in GitHub actions for PRs from forks, I think.
2. I'm not sure about changes in other .css files, looks like some vendor prefixes were not applied (added by autoprefixer in postcss) - did you compile the changes with grunt sass? You should run grunt build, but with the pre-commit hooks from above, you should be able to just git commit and it'll run automatically.

[The-EDev]

I seem to not have applied the changes to the redmine_blacklogs plugin, I'll need to check that before running grunt build