Fix/orthographic camera ssao

[toloudis]

Problem

fixes #329

Solution

The AO parameters needed special consideration for the camera.zoom parameter which is part of the mediation between orthographic and perspective. It will be sent in as a separate parameter so that it doesn't affect other depth-based effects. There can still be a shift in the AO intensity when switching cameras but it's much much more subtle.

Type of change

• Bug fix (non-breaking change which fixes an issue)

[github-actions]

jest coverage report 🧪

Total coverage

Status	Category	Percentage	Covered / Total
🔴	Statements	40.14%	1965/4895
🔴	Branches	43.88%	821/1871
🔴	Functions	37.22%	405/1088
🔴	Lines	40.39%	1882/4659

Status of coverage: 🟢 - ok, 🟡 - slightly more than threshold, 🔴 - under the threshold

Show files with reduced coverage 🔻

Reduced coverage

Status	Filename	Statements	Branches	Functions	Lines
🔴	src/visGeometry/rendering	40.97%	65.27%	32.23%	41.49%
🔴	SimulariumRenderer.ts	22.75%	75%	15.38%	22.85%

Status of coverage: 🟢 - ok, 🟡 - slightly more than threshold, 🔴 - under the threshold

[ShrimpCryptid]

Looks good! Played around in the simularium viewer to check and didn't see any issues.

[interim17]

Don't have the keenest eye for AO but it's running well in the example viewer and website.