feat: cleanup flash deploy/undeploy/build command output format

[KAJdev]

Cleans up the flash deploy, flash undeploy, and flash build command outputs to be far less noisy and provide relevant information in a cleaner way.

Flash deploy now has 4 stages, installing dependencies, creating archive, uploading build, and deploying resources, after which it prints endpoint URLs, routes, a curl template, and relevant env commands.

flash build is also far less verbose, but will display the location of the build when it is finished building

flash undeploy has been cleaned up and is now a bit more clear about the resources you are deleting, without being too verbose.

[Copilot]

Pull request overview

Reduces noise and standardizes output for flash deploy, flash build, and flash undeploy, shifting many internal details to debug logs while presenting clearer, user-focused CLI summaries.

Changes:

• Refactors deploy flow to upload builds separately and deploy via deploy_from_uploaded_build, printing endpoints/routes and “useful commands”.
• Simplifies build output and adds a concise build completion summary with artifact location.
• Cleans up undeploy UX to show clearer confirmation + per-endpoint deletion status, while reducing verbose panels and emojis.

Reviewed changes

Copilot reviewed 13 out of 14 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/unit/cli/utils/test_deployment.py	Updates unit tests to cover the new deploy_from_uploaded_build flow.
tests/unit/cli/test_undeploy.py	Adjusts undeploy CLI expectations to align with the new help/output behavior.
tests/unit/cli/test_deploy.py	Updates deploy command tests for new deployment function + manifest validation call.
src/runpod_flash/core/resources/serverless.py	Downgrades noisy operational logs from info/error to debug for cleaner CLI output.
src/runpod_flash/core/resources/resource_manager.py	Moves URL/migration/config drift logs to debug to reduce default verbosity.
src/runpod_flash/core/resources/network_volume.py	Switches “found existing volume” logging to debug.
src/runpod_flash/core/resources/load_balancer_sls_resource.py	Moves LB health/deploy logs from info/error to debug.
src/runpod_flash/core/api/runpod.py	Moves several API operation logs to debug (save/delete/check/create).
src/runpod_flash/cli/utils/deployment.py	Introduces deploy_from_uploaded_build and reduces console printing during reconcile/provisioning.
src/runpod_flash/cli/commands/undeploy.py	Simplifies undeploy output, confirmation, and per-endpoint deletion status presentation.
src/runpod_flash/cli/commands/deploy.py	Refactors deploy stages (upload vs deploy), prints endpoints, routes, curl template, and helpful commands.
src/runpod_flash/cli/commands/build_utils/manifest.py	Reduces manifest-builder informational logging to debug.
src/runpod_flash/cli/commands/build.py	Streamlines build output, adds verbose summary details, and reduces progress UI noise.

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