Add storage handling for TagTask and MeetingLink

[yeo-kexin]

No description provided.

[codecov-io]

Codecov Report

Merging #142 into master will decrease coverage by 1.25%.
The diff coverage is 22.03%.

@@             Coverage Diff              @@
##             master     #142      +/-   ##
============================================
- Coverage     71.74%   70.49%   -1.26%     
+ Complexity      576      574       -2     
============================================
  Files            96       97       +1     
  Lines          1759     1803      +44     
  Branches        191      199       +8     
============================================
+ Hits           1262     1271       +9     
- Misses          452      481      +29     
- Partials         45       51       +6     

Impacted Files	Coverage Δ	Complexity Δ
src/main/java/seedu/address/model/tag/Tag.java	77.77% <0.00%> (-15.56%)	13.00 <0.00> (ø)
.../java/seedu/address/model/util/SampleDataUtil.java	8.10% <0.00%> (ø)	1.00 <0.00> (ø)
...java/seedu/address/storage/JsonAdaptedTagTask.java	0.00% <0.00%> (ø)	0.00 <0.00> (?)
...java/seedu/address/storage/JsonProjactStorage.java	85.71% <0.00%> (ø)	8.00 <0.00> (ø)
...seedu/address/storage/JsonSerializableProjact.java	91.66% <ø> (ø)	5.00 <0.00> (ø)
...ain/java/seedu/address/storage/JsonAdaptedTag.java	51.42% <46.42%> (-30.39%)	2.00 <2.00> (-2.00)

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[siqiang-ng]

LGTM

[JoeyToh]

lgtm