Add HTTP Secure Headers on HTTPS server response

[PeterDaveHello]

Secure Header reference:

• https://owasp.org/www-project-secure-headers/

[codecov]

Codecov Report

Merging #545 (fe20e5c) into development (2944deb) will decrease coverage by 0.16%.
The diff coverage is 75.86%.

@@               Coverage Diff               @@
##           development     #545      +/-   ##
===============================================
- Coverage        92.94%   92.77%   -0.17%     
===============================================
  Files               36       36              
  Lines             3190     3213      +23     
===============================================
+ Hits              2965     2981      +16     
- Misses             160      166       +6     
- Partials            65       66       +1     

Impacted Files	Coverage Δ
server/server_endpoints.go	89.14% <61.11%> (-3.22%)	⬇️
server/server.go	82.94% <100.00%> (+0.25%)	⬆️

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[0xERR0R]

It looks good, thanks for your work!