Add compatibility date and compatibility_flags to pages deployment configs

[Cyb3r-Jak3]

Description

Adds compatibility date and compatibility flags to pages deployments
Also fixes a couple cases where errors.New(fmt.Sprintf()) was being used instead of fmt.Errorf()

Has your change been tested?

Updated unit tests and they pass

Types of changes

What sort of change does your code introduce/modify?

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• This change is using publicly documented (api.cloudflare.com or developers.cloudflare.com) and stable APIs. (soon)

[github-actions]

changelog detected ✅

[codecov-commenter]

Codecov Report

Merging #1051 (01fbe8c) into master (6c5ea4a) will increase coverage by 0.67%.
The diff coverage is 62.86%.

@@            Coverage Diff             @@
##           master    #1051      +/-   ##
==========================================
+ Coverage   49.06%   49.73%   +0.67%     
==========================================
  Files         108      115       +7     
  Lines       10428    10965     +537     
==========================================
+ Hits         5116     5453     +337     
- Misses       4200     4347     +147     
- Partials     1112     1165      +53     

Impacted Files	Coverage Δ
access_application.go	76.52% <ø> (ø)
access_bookmark.go	72.44% <ø> (ø)
ip_list.go	33.00% <0.00%> (ø)
list.go	25.00% <0.00%> (ø)
pages_project.go	50.81% <ø> (ø)
workers_account_settings.go	35.71% <35.71%> (ø)
rulesets.go	35.09% <47.36%> (+7.43%)	⬆️
workers_tail.go	52.00% <52.00%> (ø)
workers_subdomain.go	57.14% <57.14%> (ø)
email_routing_settings.go	60.00% <60.00%> (ø)
... and 16 more

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[WalshyDev]

Just put up the PR for API docs

[jacobbednarz]

awesome stuff @Cyb3r-Jak3. the API docs will be released early next week but i've confirmed in staging that the API matches what we're after here.

[github-actions]

This functionality has been released in v0.48.0.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!