Fix calculation of version and branch when using git worktree

[ermshiperete]

Description

This PR fixes the calculation of the version and branch when using git worktree. This fixes #2165.

Related Issue

#2165

This PR re-uses the tests from and enhances #1848

Motivation and Context

How Has This Been Tested?

git init testgv
cd testgv
git commit -m "Initial commit" --allow-empty
git tag v1.0 -m "v1.0"
git worktree add ../testgv2
cd ../testgv2
git commit -m "Commit on other branch
+semver:major" --allow-empty

When run with an unpatched version of gitversion this will output

...
  "FullSemVer":"1.0.0",
  "InformationalVersion":"1.0.0+Branch.master.Sha.1cb7c58dd04425f3a6aabe7431bf9f78061548f4",
  "BranchName":"master",
...

with these changes the output is:

...
  "FullSemVer":"2.0.0-testgv2.1+1",
  "InformationalVersion":"2.0.0-testgv2.1+1.Branch.testgv2.Sha.222d9fdef4732e7a3800f7b1964437a8e11e2d5d",
  "BranchName":"testgv2",
...

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed (that were passing previously).

---

This change is 

[asbjornu]

This looks good, @ermshiperete! 👏 If @tpaxatb and @chuseman could do a quick review of this as well, that would be great! 🙏

[arturcic]

@ermshiperete do you think you can move this code

var isDynamicRepo = !string.IsNullOrWhiteSpace(options.Value.DynamicGitRepositoryPath);
return isDynamicRepo ? options.Value.DotGitDirectory :  options.Value.ProjectRootDirectory;

to GitVersionOptionsExtensions and then similarly use it in GitVersionOptions as Lazy property?

It is used in 3 places, that means we can move the code into one place

[arturcic]

@asbjornu I will merge this one. Looks to be fine. I have done the change I was suggesting and also rebased on top of master.

[ermshiperete]

Thanks for the quick review & merge + release of a new version 5.3.4 with that fix!