Non-alphanumeric characters not allowed in tags

[nus-pe-bot]

Describe the bug This is more of a question than issue. It seems that the decision to only allow for alphanumeric characters in tags can limit options for users. For example, tags should not be just limited to alphanumeric characters (single words in this case). Consider the case where the tag could be multiple words such as 'Best Friend'. However, this is not allowed because of the space which is not regarded as an alphanumeric character. This allowance is reflected in the policy name and thus can be extended to tags

To Reproduce Steps to reproduce the behavior:

1. Run the command 'add n/John Doe p/98765432 e/johnd@example.com a/311, Clementi Ave 2, #02-25 m/2024-07-12 12:00 t/Best Friend'.
2. An error message indicating that tag names should be alphanumeric appears.

Expected behavior Depending on future implementations, non-alphanumeric characters may be allowed.

Screenshots

Additional context Nil

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_{[original: nus-cs2103-AY2324S2/pe-interim#863] [original labels: severity.Low type.FeatureFlaw]}

[rahhulleee]

Team's Response

For the current version, I think the functionality of tags is enough. However, we will look into this in the future.

Duplicate status (if any):

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