This pull request updates the file size formatting logic in
`GitHubFormatter` to ensure consistent output with two decimal places
for all units, including bytes, and adjusts the related tests to match
the new output format. The most important changes are grouped below:

- Fixes #506

File size formatting improvements:

* Modified `FormatFileSize` in `GitHubFormatter.ps1` to always display
byte values with two decimal places (e.g., "0.00 B" instead of "0 B").

Test updates for new formatting:

* Updated test cases in `GitHubFormatter.Tests.ps1` to expect
two-decimal formatting for bytes and adjusted regex patterns to match
the new output (e.g., `\d+[.,]\d{2}\s{2}B`).
* Refactored the test to directly validate the output of the formatter
against the new expected patterns, ensuring the tests accurately reflect
the updated formatting logic.
* Removed outdated comments and redundant test setup to streamline and
clarify the test file.

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: MariusStorhaug <17722253+MariusStorhaug@users.noreply.github.com>
Co-authored-by: Marius Storhaug <marstor@hotmail.com>

This pull request introduces several improvements and refactors across
argument completer scripts, license and gitignore handling, and data
formatting. The main goals are to standardize completer parameter usage,
enhance context-awareness and filtering, improve data sorting and
output, and clarify the license data model.

- Fixes #486

**Key changes:**

### Argument Completer Improvements and Refactoring

* Updated all argument completers to use `$fakeBoundParameters` instead
of `$fakeBoundParameter`, ensuring consistency and enabling
context-aware completions across the module. Added filtering and context
parameters where appropriate.
[[1]](diffhunk://#diff-22b2affe76b37eaa2b3cdee057e05020af8aa4890e0966e676e4a936d828e4e4L2-R3)
[[2]](diffhunk://#diff-22b2affe76b37eaa2b3cdee057e05020af8aa4890e0966e676e4a936d828e4e4L15-R18)
[[3]](diffhunk://#diff-775e15ad0206292ebf4f5d7659e274c2384326d9b0e9821b96280186769ba4d8L2-R3)
[[4]](diffhunk://#diff-ba8339f3d5f55d7346080dc2bd24097cc8d0bc87fc027a237bfa53617224b25eL1-R26)
[[5]](diffhunk://#diff-7d92b4f19fe6156533814de81d6618281c98a1914b85a2373be2638b660f0a96L5-R37)
[[6]](diffhunk://#diff-dc5710dd4a873f6fe7a26f241fd8261acdb594962c405f48982396275d6a530fR1-R12)
[[7]](diffhunk://#diff-eb8a0b19f6f2c88ecc3a09e6544d51dc0c5d8c61ad4f8fe40d544fc182c0ac91R1-R12)
[[8]](diffhunk://#diff-792b150421507ebd45a85f5eedf88b6fc3ead29405ceff31779746e5cd5bf7c7R1-R39)
* Moved and refactored several completers (for `Get-GitHubLicense`,
`Get-GitHubGitignore`, and `Connect-GitHubApp`) into their own dedicated
`completers.ps1` files, and removed the old implementations.
[[1]](diffhunk://#diff-de6b8171283593a8a3424849e06ab22a6d6ead1c9a677db2f91ffa2225759363L87-L94)
[[2]](diffhunk://#diff-349ba6d13800f374dc911b94db55e01a2e50be26859901f1eccf6a94d85ee05cL70-L77)
[[3]](diffhunk://#diff-2fcb088cf090e075faa3b356b6d08d341de9167e4e69d5270f34f7faf46e6cd7L1-L27)

### License Model and Formatting Updates

* Changed the `GitHubLicense` class to clarify property names: `Key` is
now `Name`, and `Name` is now `DisplayName`, with corresponding updates
to the constructor and format file.
[[1]](diffhunk://#diff-98f2ef3a26cb403b39286027e24110885695960c6c8b26853bd2af0c62e9f15eL26-R32)
[[2]](diffhunk://#diff-98f2ef3a26cb403b39286027e24110885695960c6c8b26853bd2af0c62e9f15eL81-R82)
[[3]](diffhunk://#diff-f3cb0ef91f12f89dc4c0b19bb042e6e2c4a71bb4040b46a853e4c71916c43e98L11-L32)
[[4]](diffhunk://#diff-f3cb0ef91f12f89dc4c0b19bb042e6e2c4a71bb4040b46a853e4c71916c43e98L44-L85)
* Updated the license format table to display the new property names and
removed less relevant columns for a cleaner output.
[[1]](diffhunk://#diff-f3cb0ef91f12f89dc4c0b19bb042e6e2c4a71bb4040b46a853e4c71916c43e98L11-L32)
[[2]](diffhunk://#diff-f3cb0ef91f12f89dc4c0b19bb042e6e2c4a71bb4040b46a853e4c71916c43e98L44-L85)

### Context and Filtering Enhancements

* Improved context handling and filtering for completers, ensuring that
completions are accurate with respect to the current context and user
input.
[[1]](diffhunk://#diff-22b2affe76b37eaa2b3cdee057e05020af8aa4890e0966e676e4a936d828e4e4L15-R18)
[[2]](diffhunk://#diff-7d92b4f19fe6156533814de81d6618281c98a1914b85a2373be2638b660f0a96L5-R37)
[[3]](diffhunk://#diff-ba8339f3d5f55d7346080dc2bd24097cc8d0bc87fc027a237bfa53617224b25eL1-R26)
[[4]](diffhunk://#diff-dc5710dd4a873f6fe7a26f241fd8261acdb594962c405f48982396275d6a530fR1-R12)
[[5]](diffhunk://#diff-eb8a0b19f6f2c88ecc3a09e6544d51dc0c5d8c61ad4f8fe40d544fc182c0ac91R1-R12)
* Added support for `App` authentication to `Get-GitHubLicense`, and
ensured that if the context is an App, it falls back to anonymous.

### Data Sorting and Output Consistency

* Ensured that results from `Get-GitHubAppInstallation` are sorted by
`Type` and `Target` for more predictable output.
[[1]](diffhunk://#diff-9ca965372ef6314e8f8759ce87dedff3c8a0d216fe06fda41e0fb38b89722dfeL60-R60)
[[2]](diffhunk://#diff-9ca965372ef6314e8f8759ce87dedff3c8a0d216fe06fda41e0fb38b89722dfeR81)

### Miscellaneous

* Commented out an unused `Accept` header in the gitignore API call,
likely to prevent issues with response formatting.

These changes collectively improve the maintainability, usability, and
consistency of the module's command-line experience.

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: MariusStorhaug <17722253+MariusStorhaug@users.noreply.github.com>
Co-authored-by: Marius Storhaug <marstor@hotmail.com>