add all svgs to org.eclipse.pde.spy bundles

This commit adds SVGs for all icons in the bundles `org.eclipse.pde.spy.bundle`, `org.eclipse.pde.spy.context`, `org.eclipse.pde.spy.css` and `org.eclipse.pde.spy.event` except for the following as these are not available as SVG yet:

org.eclipse.pde.spy.context/splash.svg (is not used in this bundle)

The bundle `org.eclipse.pde.spy.core` uses only one icon `spyicon.png` in the file `fragment.e4xmi` which is also not available as SVG yet.

The bundle `org.eclipse.pde.spy.model` uses only one icon `application_lightning.png` which is also not available as SVG yet.

Almost all icons in bundle `org.eclipse.pde.spy.preferences` are named like enabled icons but are disabled looking. I ignored this bundle as no similar SVGs are available.

Author: Michael Bangas

ui/org.eclipse.pde.spy.bundle/META-INF/MANIFEST.MF

@@ -15,3 +15,4 @@ Import-Package: jakarta.annotation;version="[2.1.0,3.0.0)",
  jakarta.inject;version="[2.0.0,3.0.0)"
 Bundle-Vendor: %provider-name
 Bundle-ActivationPolicy: lazy
+Require-Capability: eclipse.swt;filter:="(image.format=svg)"