Added .evalf() to Vector and Dyadic

[sidhu1012]

References to other Issues or PRs

Fixes #18064
Fixes #18310
Fixes #18559

Brief description of what is fixed or changed

Introduced .evalf() to Dyadic and Vector class.

Other comments

Release Notes

• physics.vector
  • Added .evalf() to Vector class
  • Added .evalf() to Dyadic class

[sympy-bot]

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• physics.vector

  • Added .evalf() to Vector class (#20396 by @oscarbenjamin, @Saanidhyavats, and @sidhu1012)

  • Added .evalf() to Dyadic class (#20396 by @oscarbenjamin, @Saanidhyavats, and @sidhu1012)

This will be added to https://github.com/sympy/sympy/wiki/Release-Notes-for-1.8.

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#### References to other Issues or PRs
<!-- If this pull request fixes an issue, write "Fixes #NNNN" in that exact
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Fixes #18064 
Fixes #18310
Fixes #18559

#### Brief description of what is fixed or changed
Introduced .evalf() to Dyadic and Vector class.

#### Other comments


#### Release Notes

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<!-- BEGIN RELEASE NOTES -->
- physics.vector
     - Added .evalf() to Vector class
     - Added .evalf() to Dyadic class
<!-- END RELEASE NOTES -->

Update

The release notes on the wiki have been updated.

[codecov]

Codecov Report

Merging #20396 (9671a84) into master (65e7294) will decrease coverage by 0.011%.
The diff coverage is 84.615%.

@@              Coverage Diff              @@
##            master    #20396       +/-   ##
=============================================
- Coverage   75.771%   75.759%   -0.012%     
=============================================
  Files          673       673               
  Lines       174110    174144       +34     
  Branches     41106     41112        +6     
=============================================
+ Hits        131925    131930        +5     
- Misses       36467     36501       +34     
+ Partials      5718      5713        -5     

[sidhu1012]

@moorepants I have added .evalf() to Dyadic and Vector classes. Please review .

[sidhu1012]

@moorepants I have updated the test case. Please review.

[moorepants]

LGTM other than the minor comments.

[sidhu1012]

@moorepants I have done the reviewed changes.

[moorepants]

Thanks!

[sidhu1012]

@moorepants Is there any other method required to be added in these two classes?

[moorepants]

.xreplace() is another one.

[sidhu1012]

.xreplace() is another one.

I'll work on that now.