Add InfluxDB 2.x time-series database support

[Copilot]

Implements full CRUD operations for InfluxDB 2.x, a time-series database widely used in IoT and industrial monitoring. InfluxDB uses Flux query language and Line Protocol (not SQL), requiring custom driver implementation.

Implementation

Driver Layer

• ADO.NET Provider: InfluxDBFactory, InfluxDBConnection, InfluxDBCommand, InfluxDBDataReader, InfluxDBParameter
• HTTP API Integration: Shared HttpClient instance with per-request Token authentication to avoid socket exhaustion
• CSV Response Parsing: Automatic deserialization of InfluxDB's CSV-formatted query results

Database Adapter

• InfluxDB: Extends RemoteDb with time-series specific formatting (nanosecond timestamps, quoted identifiers)
• InfluxDBSession: Batch operations via Line Protocol format

  // Line Protocol: measurement,tag1=val1 field1=val1,field2=val2 timestamp
  "temperature,location=room1 value=23.5,humidity=45"

• InfluxDBMetaData: Queries measurements (tables) using Flux's schema functions

API

Connection string format:

DAL.AddConnStr("InfluxDB", 
    "Server=http://localhost:8086;Token=xxx;Organization=org;Bucket=bucket",
    null, "InfluxDB");

Write (Line Protocol):

dal.Execute("temperature,location=room1 value=23.5");

Query (Flux):

var flux = "from(bucket:\"bucket\") |> range(start: -1h)";
var dt = dal.Query(flux);

Testing

8 integration tests covering initialization, connection, writes, queries, and batch operations (skipped by default, require running InfluxDB instance).

Framework Support

Compatible with net45 through net10. Uses HttpRequestMessage with SendAsync() for broad framework compatibility.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• crl.entrust.net
  • Triggering command: /usr/bin/dotnet dotnet build NewLife.XCode.sln --configuration Release (dns block)
• ocsp.entrust.net
  • Triggering command: /usr/bin/dotnet dotnet build NewLife.XCode.sln --configuration Release (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

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This section details on the original issue you should resolve

<issue_title>期待支持influxdb时序数据库</issue_title>
<issue_description>工控领域influxdb用得很多。期待XCode早日集成influxdb</issue_description>

<agent_instructions>尽力实现这个需要，主要是提供添删改查功能</agent_instructions>

Comments on the Issue (you are @copilot in this section)

@nnhy influxdb 跟es 一样，使用自己独特的查询语法，不支持sql。 XCode不太好支持。

为了支持这种独立查询语法的数据，XCode需要进行架构升级才行。</comment_new>
<comment_new>@nnhy
@copilot 帮我分析一下，XCode能否实现对influxdb时序数据库的支持，主要是添删改查</comment_new>

• Fixes 期待支持influxdb时序数据库 #28

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[nnhy]

在不写查询语句的前提下，要求支持实体类的添删改查操作。