refactor: rework the MinimalVisibilityCommand regex

[mivek]

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[github-actions]

Please check on sonarcloud https://sonarcloud.io/project/pull_requests_list?id=io.github.mivek%3AmetarParser that the PR does not add any issue.

[Copilot]

Pull Request Overview

Refactors the MinimalVisibilityCommand to use a more precise regex that captures numeric visibility and direction separately, normalizes input to uppercase before matching, and updates tests to align with these changes.

• Clarified regex to explicitly capture the four-digit visibility and one- or two-letter compass directions
• Uppercases input in execute and canParse and adjusts group indexing
• Updated existing test and added parameterized tests for all uppercase directions

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
metarParser-parsers/src/test/java/io/github/mivek/parser/MetarParserTest.java	Changed expected minimal visibility direction from lowercase to uppercase
metarParser-parsers/src/test/java/io/github/mivek/command/common/MinimalVisibilityCommandTest.java	Added parameterized tests for each uppercase compass direction
metarParser-parsers/src/main/java/io/github/mivek/command/common/MinimalVisibilityCommand.java	Refactored regex, applied toUpperCase() on input, and split groups for digits and direction

Comments suppressed due to low confidence (1)

metarParser-parsers/src/test/java/io/github/mivek/command/common/MinimalVisibilityCommandTest.java:13

• Consider adding tests for lowercase direction inputs (e.g., "nw") to ensure the command correctly handles case-insensitive input after uppercasing.

    @ValueSource(strings = {"NW", "N","NE","E","SE","S","SW","W"})