feat(typescript-lcfirst): lowercase the first characters of the text

[ddouble-d]

• Programming langugage: TypeScript

• Function(s) that I'm implementing: lcfirst

• Issue number: Typescript Implementation #18

• I have created unit tests to support my implementation

• I have created in-code documentation (or docstring) to document my code

• (Optional) I have updated the README.md file to document the function I'm implementing

[codecov]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage 👍

Coverage data is based on head (43e313c) compared to base (f9d48b1).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##            master       #65    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files           47         5    -42     
  Lines          597        15   -582     
  Branches         5         5            
==========================================
- Hits           597        15   -582     

Flag	Coverage Δ
clojure	?
csharp	?
go	?
rust	?
typescript	100.00% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
typescript/src/string/lcfirst.ts	100.00% <100.00%> (ø)
go/ucwords.go
go/strrev.go
spec/pehape/string/strrev_spec.rb
spec/pehape/string/ord_spec.rb
csharp/Pehape/String/Explode.cs
go/chr.go
rust/src/string/implode.rs
spec/pehape/string/implode_spec.rb
clojure/src/pehape/string/levenshtein.clj
... and 34 more

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[aldy505]

ada merge conflict

[ddouble-d]

hi @elianiva
can you re-review if you don't mind?