Copy pkg/config to pkg/configv1

[Warashi]

What this PR does / why we need it:

This PR prepares the pkg/configv1 package to develop pipedv1. This makes us to be able to reduce mistakenly breaking piped (v0).

The files under pkg/configv1 are copies of pkg/config with no modifications.

Which issue(s) this PR fixes:

Part of #4980

Does this PR introduce a user-facing change?:

• How are users affected by this change:
• Is this breaking change:
• How to migrate (if breaking change):

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 51.86972% with 798 lines in your changes missing coverage. Please review.

Project coverage is 23.94%. Comparing base (1689c63) to head (e75d3e1). Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/configv1/piped.go	57.45%	252 Missing and 39 partials :warning:
pkg/configv1/application.go	49.30%	160 Missing and 22 partials :warning:
pkg/configv1/control_plane.go	34.23%	66 Missing and 7 partials :warning:
pkg/configv1/config.go	55.83%	43 Missing and 10 partials :warning:
pkg/configv1/event_watcher.go	59.22%	28 Missing and 14 partials :warning:
pkg/configv1/launcher.go	0.00%	28 Missing :warning:
pkg/configv1/analysis.go	46.80%	21 Missing and 4 partials :warning:
pkg/configv1/application_kubernetes.go	8.00%	22 Missing and 1 partial :warning:
pkg/configv1/application_ecs.go	36.36%	20 Missing and 1 partial :warning:
pkg/configv1/replicas.go	69.56%	13 Missing and 1 partial :warning:
... and 6 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #5237 +/- ## ========================================== + Coverage 22.92% 23.94% +1.01% ========================================== Files 420 437 +17 Lines 45336 46994 +1658 ========================================== + Hits 10392 11251 +859 - Misses 34147 34838 +691 - Partials 797 905 +108 ``` | [Flag](https://app.codecov.io/gh/pipe-cd/pipecd/pull/5237/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pipe-cd) | Coverage Δ | | |---|---|---| | [](https://app.codecov.io/gh/pipe-cd/pipecd/pull/5237/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pipe-cd) | `23.94% <51.86%> (+1.01%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pipe-cd#carryforward-flags-in-the-pull-request-comment) to find out more.

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