build: Internal method linking - plan and basic script

.opencode/plans/graphs-links.md

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+## Internal methods
+
+Examples of Internal methods not being connected -
+
+1. `[[DefineOwnProperty]]` - 
+
+* /abstract-operations.html#sec-createdataproperty - `7.3.5 CreateDataProperty` - uses generic `O.[[DefineOwnProperty]]`
+* /ordinary-and-exotic-objects-behaviours.html#sec-array-exotic-objects-defineownproperty-p-desc - `10.4.2.1 [[DefineOwnProperty]]` -Array has custom `[[DefineOwnProperty]]`. 
+* /ordinary-and-exotic-objects-behaviours.html#sec-ordinary-object-internal-methods-and-internal-slots-defineownproperty-p-desc - `10.1.6 [[DefineOwnProperty]]` - Ordinary definition
+
+2. `[[GetOwnProperty]]` - Similar, defined for proxies
+
+
+Written in html as (both consumer + definition) -
+
+<var class="field">[[DefineOwnProperty]]</var>
+
+How it works internally for references -
+
+ecmarkup.js - `showReferencesFor(entry)` - uses `entry.referencingIds` from biblio.
+
+
+Abstract methods list -
+
+File: /ecmascript-data-types-and-values.html#table-essential-internal-methods
+
+[[GetPrototypeOf]]
+[[SetPrototypeOf]]
+[[IsExtensible]]
+[[PreventExtensions]]
+[[GetOwnProperty]]
+[[DefineOwnProperty]]
+[[HasProperty]]
+[[Get]]
+[[Set]]
+[[Delete]]
+[[OwnPropertyKeys]]
+
+File: /ecmascript-data-types-and-values.html#table-additional-essential-internal-methods-of-function-objects
+[[Call]]
+[[Construct]]
+
+*Connect these to the implementations*
+
+Regex to search all -
+```
+\[\[GetPrototypeOf\]\]|\[\[SetPrototypeOf\]\]|\[\[IsExtensible\]\]|\[\[PreventExtensions\]\]|\[\[GetOwnProperty\]\]|\[\[DefineOwnProperty\]\]|\[\[HasProperty\]\]|\[\[Get\]\]|\[\[Set\]\]|\[\[Delete\]\]|\[\[OwnPropertyKeys\]\]|\[\[Call\]\]|\[\[Construct\]\]
+```
+
+Problems -
+1. `[[Get]]`, `[[Set]]` - are also used as Property Attributes (/ecmascript-data-types-and-values.html#sec-property-attributes). Distinguish them.
+2. Mark all Property Attributes.
+