Add support for PHP Pear (#2775)

* Add support for PHP Pear and unify PECL with it

Signed-off-by: Laurent Goderre <laurent.goderre@docker.com>
Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

* fix tests

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

* remove log statements

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

* fix struct comment

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

---------

Signed-off-by: Laurent Goderre <laurent.goderre@docker.com>
Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>
Co-authored-by: Alex Goodman <wagoodman@users.noreply.github.com>

schema/json/schema-latest.json

@@ -1,6 +1,6 @@
 {
   "$schema": "https://json-schema.org/draft/2020-12/schema",
-  "$id": "anchore.io/schema/syft/json/16.0.25/document",
+  "$id": "anchore.io/schema/syft/json/16.0.26/document",
   "$ref": "#/$defs/Document",
   "$defs": {
     "AlpmDbEntry": {
@@ -1872,6 +1872,9 @@
             {
               "$ref": "#/$defs/PhpComposerLockEntry"
             },
+            {
+              "$ref": "#/$defs/PhpPearEntry"
+            },
             {
               "$ref": "#/$defs/PhpPeclEntry"
             },
@@ -2164,11 +2167,38 @@
         "dist"
       ]
     },
+    "PhpPearEntry": {
+      "properties": {
+        "name": {
+          "type": "string"
+        },
+        "channel": {
+          "type": "string"
+        },
+        "version": {
+          "type": "string"
+        },
+        "license": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        }
+      },
+      "type": "object",
+      "required": [
+        "name",
+        "version"
+      ]
+    },
     "PhpPeclEntry": {
       "properties": {
         "name": {
           "type": "string"
         },
+        "channel": {
+          "type": "string"
+        },
         "version": {
           "type": "string"
         },