feat: add autocomplete for --profile and --module

[liamdalg]

Description

• Add autocompletion for --profile and --module.
• Scope autocompletion for --filename to .{yaml,yml}

User facing changes

For example, with

• Module api: staging, prod
• Module web: dev, staging, prod

$ skaffold __complete dev -p ""
INFO[0000] Skaffold &{Version: ConfigVersion:skaffold/v4beta14 GitVersion: GitCommit: BuildDate: GoVersion:go1.27.1-X:nodwarf5 Compiler:gc Platform:linux/amd64 User:}  subtask=-1 task=DevLoop
staging
prod
dev
:4
Completion ended with directive: ShellCompDirectiveNoFileComp

λ skaffold __complete dev -m ""
INFO[0000] Skaffold &{Version: ConfigVersion:skaffold/v4beta14 GitVersion: GitCommit: BuildDate: GoVersion:go1.27.1-X:nodwarf5 Compiler:gc Platform:linux/amd64 User:}  subtask=-1 task=DevLoop
api
web
:4
Completion ended with directive: ShellCompDirectiveNoFileCom

$ skaffold __complete dev -m api -p ""
INFO[0000] Skaffold &{Version: ConfigVersion:skaffold/v4beta14 GitVersion: GitCommit: BuildDate: GoVersion:go1.27.1-X:nodwarf5 Compiler:gc Platform:linux/amd64 User:}  subtask=-1 task=DevLoop
staging
prod
:4
Completion ended with directive: ShellCompDirectiveNoFileComp