build(backport): Switch to using Hatchling as build backend

[matthewfeickert]

Description

Backport PR #2095 (14127ae) to release/v0.7.x for v0.7.1 and ignore DeprecationWarning on release branches.

Also backport components of:

• PR docs: Add GitHub Releases page to project url metadata #2099
• PR docs: Add Environment :: WebAssembly :: Emscripten PyPI trove classifier #2100
• PR build: Install tensorflow-macos on Apple silicon Macs #2119
• PR build: Remove include of files always included by hatchling #2125
• PR fix: Add filterwarnings ignore for np.bool8 DeprecationWarning #2072
• PR feat: Add Python 3.11 to testing and default to using it #2145

Checklist Before Requesting Reviewer

• Tests are passing
• "WIP" removed from the title of the pull request
• Selected an Assignee for the PR to be responsible for the log summary

Before Merging

For the PR Assignees:

• Summarize commit messages into a comprehensive review of the PR

* Backport PR #2095 to the release/v0.7.x branch for easier comparisons.
* Also backport components of:
    - PR https://github.com/scikit-hep/pyhf/pull/2072
    - PR https://github.com/scikit-hep/pyhf/pull/2099
    - PR https://github.com/scikit-hep/pyhf/pull/2100
    - PR https://github.com/scikit-hep/pyhf/pull/2119
    - PR https://github.com/scikit-hep/pyhf/pull/2125
    - PR https://github.com/scikit-hep/pyhf/pull/2145
* In filterwarnings ignore all DeprecationWarning on patch release branches
  (e.g. release/v0.7.x).

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (7ab10ed) 96.28% compared to head (7ab10ed) 96.28%.

❗ Current head 7ab10ed differs from pull request most recent head 8804b62. Consider uploading reports for the commit 8804b62 to get more accurate results

Additional details and impacted files

@@               Coverage Diff               @@
##           release/v0.7.x    #2148   +/-   ##
===============================================
  Coverage           96.28%   96.28%           
===============================================
  Files                  69       69           
  Lines                4474     4474           
  Branches              608      608           
===============================================
  Hits                 4308     4308           
  Misses                127      127           
  Partials               39       39           

Flag	Coverage Δ
unittests-3.7	96.28% <0.00%> (ø)

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[matthewfeickert]

I'm going to approve and merge this myself. As always, PRs approved by a single core dev can be reverted as needed by the rest of the dev team.