[build] remove default vendor name

[bukepo]

This commit forbids using "OpenThreadDebug" as the vendor name in production build. This commit also discourages "BorderRouter" as product name in production build.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 43.30%. Comparing base (2b41187) to head (b61e6d7).
Report is 952 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2704       +/-   ##
===========================================
- Coverage   55.77%   43.30%   -12.47%     
===========================================
  Files          87      108       +21     
  Lines        6890    13404     +6514     
  Branches        0      963      +963     
===========================================
+ Hits         3843     5805     +1962     
- Misses       3047     7291     +4244     
- Partials        0      308      +308     

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[morningboata]

1. Can we add instruction above (around line 47), on how to compile a Debug version, and how to compile a Release version (with the vendor_name and model name as parameter)?

2. Local run to ensure both instructions (Debug and Release) works.

3. if user run command "script/cmake-build -DCMAKE_BUILD_TYPE=Release", the command line parameter "DCMAKE_BUILD_TYPE=Release" will override "-DCMAKE_BUILD_TYPE=Debug" here right?

[bukepo]

if user run command "script/cmake-build -DCMAKE_BUILD_TYPE=Release", the command line parameter "DCMAKE_BUILD_TYPE=Release" will override "-DCMAKE_BUILD_TYPE=Debug" here right?

Yes.