[CODE HEALTH] Fix clang-tidy warnings in nostd files

[dbarker]

Fixes or nolint 17 clang-tidy warnings in nostd

Changes

• fix or nolint the following clang-tidy warnings in nostd files

---

opentelemetry-cpp/api/include/opentelemetry/nostd/function_ref.h (4 warnings)

Line	Check	Message
28	cppcoreguidelines-special-member-functions	class 'function_ref' defines a copy constructor and a move constructor but does not define a destructor, a copy assignment operator or a move assignment operator
40	performance-unnecessary-value-param	the parameter 'args' is copied for each invocation but only used as a const reference; consider making it a const reference
79	cppcoreguidelines-missing-std-forward	forwarding reference parameter 'f' is never forwarded inside the function body
89	performance-unnecessary-value-param	the parameter 'args' is copied for each invocation but only used as a const reference; consider making it a const reference

---

opentelemetry-cpp/api/include/opentelemetry/nostd/shared_ptr.h (5 warnings)

Line	Check	Message
43	cppcoreguidelines-special-member-functions	class 'shared_ptr_wrapper' defines a non-default destructor but does not define a copy constructor, a copy assignment operator, a move constructor or a move assignment operator
99	cppcoreguidelines-rvalue-reference-param-not-moved	rvalue reference parameter 'other' is never moved from inside the function body
106	cppcoreguidelines-rvalue-reference-param-not-moved	rvalue reference parameter 'other' is never moved from inside the function body
112	cppcoreguidelines-rvalue-reference-param-not-moved	rvalue reference parameter 'other' is never moved from inside the function body
160	bugprone-use-after-move	'other' used after it was moved

---

opentelemetry-cpp/api/include/opentelemetry/nostd/span.h (2 warnings)

Line	Check	Message
86	cppcoreguidelines-special-member-functions	class 'span' defines a copy constructor and a copy assignment operator but does not define a destructor, a move constructor or a move assignment operator
191	cppcoreguidelines-special-member-functions	class 'span' defines a copy constructor and a copy assignment operator but does not define a destructor, a move constructor or a move assignment operator

---

opentelemetry-cpp/api/include/opentelemetry/nostd/unique_ptr.h (5 warnings)

Line	Check	Message
45	cppcoreguidelines-special-member-functions	class 'unique_ptr' defines a non-default destructor, a move constructor and a move assignment operator but does not define a copy constructor or a copy assignment operator
61	cppcoreguidelines-rvalue-reference-param-not-moved	rvalue reference parameter 'other' is never moved from inside the function body
66	cppcoreguidelines-rvalue-reference-param-not-moved	rvalue reference parameter 'other' is never moved from inside the function body
85	cppcoreguidelines-rvalue-reference-param-not-moved	rvalue reference parameter 'other' is never moved from inside the function body
93	cppcoreguidelines-rvalue-reference-param-not-moved	rvalue reference parameter 'other' is never moved from inside the function body

---

opentelemetry-cpp/api/include/opentelemetry/nostd/variant.h (1 warnings)

Line	Check	Message
54	abseil-no-namespace	namespace 'absl' is reserved for implementation of the Abseil library and should not be opened in user code

---

For significant contributions please make sure you have completed the following items:

• CHANGELOG.md updated for non-trivial changes
• Unit tests have been added
• Changes in public API reviewed

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.05%. Comparing base (739862d) to head (f391350).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3924      +/-   ##
==========================================
- Coverage   90.06%   90.05%   -0.01%     
==========================================
  Files         226      226              
  Lines        7223     7221       -2     
==========================================
- Hits         6505     6502       -3     
- Misses        718      719       +1     

Files with missing lines	Coverage Δ
api/include/opentelemetry/nostd/function_ref.h	77.78% <100.00%> (ø)
api/include/opentelemetry/nostd/shared_ptr.h	96.78% <100.00%> (-0.10%)	⬇️
api/include/opentelemetry/nostd/span.h	95.92% <ø> (ø)
api/include/opentelemetry/nostd/unique_ptr.h	100.00% <100.00%> (ø)
api/include/opentelemetry/nostd/variant.h	66.67% <ø> (ø)

... and 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.