feat(tracing): Improve @trace decorator.

[antonpirker]

Update the @trace decorator and make it more powerful. It accepts now the following parameters: op, name, attributes.

Example usage:

import sentry_sdk
from sentry_sdk.consts import OP

# Simple usage (like before)
@sentry_sdk.trace
def process_data():
    # Function implementation
    pass

# With custom parameters
@sentry_sdk.trace(
    op=OP.DB_QUERY,
    name="Get user data",
    attributes={"postgres": True}
)
def make_db_query(sql):
    # Function implementation
    pass

This creates better DX for our users.

[codecov]

Codecov Report

❌ Patch coverage is 97.29730% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 85.08%. Comparing base (19914cd) to head (dc63e43).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
sentry_sdk/tracing.py	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4648      +/-   ##
==========================================
+ Coverage   85.07%   85.08%   +0.01%     
==========================================
  Files         156      156              
  Lines       15824    15836      +12     
  Branches     2677     2677              
==========================================
+ Hits        13462    13474      +12     
+ Misses       1583     1582       -1     
- Partials      779      780       +1     

Files with missing lines	Coverage Δ
sentry_sdk/integrations/starlite.py	81.94% <100.00%> (ø)
sentry_sdk/tracing_utils.py	87.55% <100.00%> (+0.82%)	⬆️
sentry_sdk/tracing.py	86.39% <80.00%> (+0.02%)	⬆️

... and 1 file with indirect coverage changes

[szokeasaurusrex]

Added a few small suggestions, can do a more in depth review once they're addressed