Convert Pollen.com sensor into IQVIA component

[bachya]

Breaking Change:

The pollen sensor platform is now the iqvia component; the configuration.yaml schema has changed accordingly.

Description:

In expanding the functionality of the pollen sensor, I realized that the parent company (IQVIA) hosts a variety of sites (https://pollen.com, https://flustar.com, etc.) from which valid data can come. To accommodate this, I want to generalize the pollen sensor into the iqvia component.

The PR does two things:

1. Moves from pypollencom to pyiqvia.
2. Performs all of the necessary work to move the integration to the iqvia component.

This PR is a tad bigger than I would like, but it is in place to avoid multiple breaking changes. It does not implement a config entry; that will come in a separate PR.

Related issue (if applicable): N/A

Pull request in home-assistant.io with documentation (if applicable): home-assistant/home-assistant.io#9194

Example entry for configuration.yaml (if applicable):

iqvia:
  zip_code: "12345"

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated in home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly (example).
• New dependencies have been added to requirements in the manifest (example).
• New dependencies are only imported inside functions that use them (example).
• New or updated dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.

[codecov]

Codecov Report

Merging #22986 into dev will decrease coverage by 0.57%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##              dev   #22986      +/-   ##
==========================================
- Coverage   94.13%   93.56%   -0.58%     
==========================================
  Files         448      451       +3     
  Lines       36720    36946     +226     
==========================================
+ Hits        34567    34568       +1     
- Misses       2153     2378     +225

Impacted Files	Coverage Δ
homeassistant/components/iqvia/const.py	0% <0%> (ø)
homeassistant/components/iqvia/__init__.py	0% <0%> (ø)
homeassistant/components/iqvia/sensor.py	0% <0%> (ø)
homeassistant/components/uk_transport/sensor.py	94.16% <0%> (+0.72%)	⬆️

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[codecov]

Codecov Report

Merging #22986 into dev will decrease coverage by 0.57%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##              dev   #22986      +/-   ##
==========================================
- Coverage   94.13%   93.56%   -0.58%     
==========================================
  Files         448      451       +3     
  Lines       36720    36946     +226     
==========================================
+ Hits        34567    34568       +1     
- Misses       2153     2378     +225

Impacted Files	Coverage Δ
homeassistant/components/iqvia/const.py	0% <0%> (ø)
homeassistant/components/iqvia/__init__.py	0% <0%> (ø)
homeassistant/components/iqvia/sensor.py	0% <0%> (ø)
homeassistant/components/uk_transport/sensor.py	94.16% <0%> (+0.72%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c2cfc4a...af05f80. Read the comment docs.

[codecov]

Codecov Report

Merging #22986 into dev will decrease coverage by 0.19%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              dev   #22986     +/-   ##
=========================================
- Coverage   94.29%   94.09%   -0.2%     
=========================================
  Files         458      452      -6     
  Lines       37160    36797    -363     
=========================================
- Hits        35040    34625    -415     
- Misses       2120     2172     +52

Impacted Files	Coverage Δ
homeassistant/components/mqtt/fan.py	74.19% <0%> (-23.78%)	⬇️
homeassistant/bootstrap.py	59.25% <0%> (-15.15%)	⬇️
homeassistant/components/hassio/ingress.py	67.76% <0%> (-10.29%)	⬇️
homeassistant/components/axis/device.py	93.18% <0%> (-6.82%)	⬇️
homeassistant/components/hue/bridge.py	73.07% <0%> (-1%)	⬇️
homeassistant/loader.py	93.15% <0%> (-0.72%)	⬇️
homeassistant/components/axis/camera.py	90.24% <0%> (-0.67%)	⬇️
homeassistant/components/hassio/auth.py	90.47% <0%> (-0.44%)	⬇️
homeassistant/helpers/service.py	91.58% <0%> (-0.4%)	⬇️
homeassistant/components/hassio/handler.py	95.52% <0%> (-0.13%)	⬇️
... and 24 more

---

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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