fix: support spaces in Azure DevOps project names

[ryanfk]

Summary

• Azure DevOps project names can contain spaces (e.g., Americas Praxair tfs), but apm install rejected them with "not accessible or doesn't exist"
• The character-validation regexes in DependencyReference.parse() only allowed [a-zA-Z0-9._-], blocking spaces and %20-encoded input
• URL builder functions (build_ado_https_clone_url, build_ado_ssh_url, build_ado_api_url) interpolated project names directly without percent-encoding

Changes

src/apm_cli/models/apm_package.py:

• Decode percent-encoded input (%20 → space) early in parse()
• Allow spaces in ADO path-component validation regexes
• Decode percent-encoded path components after URL parsing
• URL-encode project segment in to_github_url()

src/apm_cli/utils/github_host.py:

• URL-encode the project parameter in build_ado_https_clone_url(), build_ado_ssh_url(), and build_ado_api_url()

All three input forms now work

apm install dev.azure.com/org/My%20Project/repo
apm install "dev.azure.com/org/My Project/repo"
apm install dev.azure.com/org/My%20Project/_git/repo

Test plan

• All 99 existing tests pass — confirms no regressions for project names without spaces
• Verified parsing with %20, literal spaces, and _git segment
• Verified URL builders produce correctly encoded URLs

Fixes #89

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