Opcua binding refactor

[erossignon]

code clean up

remove redundant findBasicType Code( as already provided by node-opcua with better implementation)

fix issue: Connection Sharing Bug in OPC UA Client

Root Cause

A recent change in how the href field is constructed introduced a bug in connection sharing. Previously, the href and opcua:nodeid were separate fields, like this:

{
  "href": "opc.tcp://localhost:4840",
  "opcua:nodeid": "ns=1;s=Temperature"
}

Now, the href includes the node ID as a query parameter:

{
  "href": "opc.tcp://localhost:4840/?id=ns=1;s=Temperature"
}

note: both syntaxes are still supported

Because the href is now unique for each node, the OPCAProtocolClient treats each request as requiring a new connection. This leads to session exhaustion on the server, as connections are not being reused.

Why this happens

The href was previously used as a key to identify and reuse existing connections. With the new scheme, every hrefis unique, so the client creates a new connection for each operation.

the fix
To restore connection sharing, the href is first normalized by removing the query parameters before using it as a connection key. This ensures that connections to the same endpoint (e.g., opc.tcp://localhost:4840) are reused, regardless of the node ID in the query.

In the meantime, a refactor and simplification of the connection sharing mecanism has been undertaken

Refactor codec:

A commit refactors the codec logic in the OPCUA binding into multiple files.
The main codec.ts file has been split into:

• opcua-binary-codec.ts
• opcua-data-schemas.ts
• `opcua-json-codec.ts

[codecov]

Codecov Report

❌ Patch coverage is 89.00862% with 51 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.65%. Comparing base (3325e12) to head (1b26f48).
⚠️ Report is 36 commits behind head on master.

Files with missing lines	Patch %	Lines
...kages/binding-opcua/src/codecs/opcua-json-codec.ts	76.77%	34 Missing and 2 partials ⚠️
...ackages/binding-opcua/src/opcua-protocol-client.ts	88.80%	14 Missing ⚠️
...ges/binding-opcua/src/codecs/opcua-binary-codec.ts	98.11%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1451      +/-   ##
==========================================
+ Coverage   77.58%   77.65%   +0.07%     
==========================================
  Files          79       86       +7     
  Lines       15331    15903     +572     
  Branches     1445     1501      +56     
==========================================
+ Hits        11894    12349     +455     
- Misses       3414     3531     +117     
  Partials       23       23              

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[danielpeintner]

LGTM

Minor: copyright year could/should be updated

[danielpeintner]

Thanks for the latest change!