Update metadata and README for the Gitea home and KiCad 10

metadata.json: identifier moved to a reverse-DNS form that matches the PCM
schema pattern (the previous com.github.magdev/... contained a slash and was
never valid), resource URL repointed at Gitea, and the declared minimum
kicad_version raised from 6.0 to 10.0 because the symbols and footprints are
now stored in the current format that KiCad 6 cannot read.

README: clone URL, the KiCad 10 requirement, what the library actually covers
(95 catalogue parts across 11 series plus the two terminal symbols and the
radial MKT 22uF), and a pointer to the boxsim generator.

metadata.json validates against /usr/share/kicad/schemas/pcm.v1.schema.json.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

metadata.json

@@ -3,7 +3,7 @@
     "name": "Visaton Kicad Library",
     "description": "Visaton electronic parts",
     "description_full": "This package contains symbols, footprints and 3D model for the electronic parts of Visaton speaker manufacturer.",
-    "identifier": "com.github.magdev/visaton-kicad-library",
+    "identifier": "ch.bundespruefstelle.src.magdev.visaton-kicad-library",
     "type": "library",
     "author": {
         "name": "Marco Grätsch (magdev)",
@@ -13,7 +13,7 @@
     },
     "license": "CC-BY-SA-4.0",
     "resources": {
-        "Github": "https://github.com/magdev/visaton-kicad-library"
+        "Repository": "https://src.bundespruefstelle.ch/magdev/kicad-visaton-lib"
     },
     "tags": [
         "footprint",
@@ -24,7 +24,7 @@
         {
             "version": "1.0",
             "status": "development",
-            "kicad_version": "6.0"
+            "kicad_version": "10.0"
         }
     ]
 }