Update nuspec files to place libraries under .NETnanoFramework1.0 TFM

[Copilot]

nuspec files were placing output files directly under lib/ without a TFM subfolder, and declaring flat dependencies instead of a framework-targeted dependency group.

Changes across all 9 nuspec files

• Dependency group: Wrapped all <dependency> elements in <group targetFramework=".NETnanoFramework1.0">
• File target path: Changed from lib\AssemblyName.ext (per-file) to lib\netnano1.0 (TFM folder)
• Wildcard pattern: Replaced 5 explicit file entries (.dll, .pdb, .pdbx, .pe, .xml) with a single wildcard

Before:

<dependencies>
  <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.33" />
  ...
</dependencies>
...
<files>
  <file src="nanoFramework.M5Core\bin\Release\nanoFramework.M5Core.dll" target="lib\nanoFramework.M5Core.dll" />
  <file src="nanoFramework.M5Core\bin\Release\nanoFramework.M5Core.pdbx" target="lib\nanoFramework.M5Core.pdbx" />
  <!-- ... 3 more explicit entries -->
</files>

After:

<dependencies>
  <group targetFramework=".NETnanoFramework1.0">
    <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.33" />
    ...
  </group>
</dependencies>
...
<files>
  <file src="nanoFramework.M5Core\bin\Release\nanoFramework.M5Core.*" target="lib\netnano1.0" />
</files>

Affected packages: M5Core, M5Core2, M5StickC, M5StickCPlus, AtomLite, AtomMatrix, CoreInk, Tough, Fire.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Update nuspec to place library under nano TFM</issue_title>
<issue_description>### Details about task
Most of the nuspec files are not using the correct location to place the files.
Files (DLL, PE, PDBX and XML for IntelliSense) should be placed under "lib\netnano1.0" (currently are being placed under "lib" only.
Also they should declare a dependency group for ".NETnanoFramework1.0" target framework.
At the same time those still naming the various file types should use a wildcard instead (e.g. "...\Release\mscorlib.*).
The correct pattern should be (take this nuspec as sample):
nanoframework/System.Device.Adc@aab7bca

Do not change anything else on the nuspec file.

Work from the DEVELOP branch.

Description

</issue_description>

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

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[josesimoes]

@nfbot updatedependencies develop