internal/cli, cmd/geth: replaced package naoina/toml with BurntSushi/toml and updated config name-tags

[pratikspatil024]

This PR,

• Replaced the naoina/toml package in dumpconfig with BurntSushi/toml package.
• Updated the toml name tags for the raw field types in the config structure.
• Updated/modified tests accordingly.
• Replaced the naoina/toml package in cmd/geth/config.go with BurntSushi/toml package.

Jira Task Link

[codecov-commenter]

Codecov Report

Merging #486 (154ab4b) into develop (d8d9360) will increase coverage by 0.00%.
The diff coverage is 0.00%.

@@           Coverage Diff            @@
##           develop     #486   +/-   ##
========================================
  Coverage    57.00%   57.00%           
========================================
  Files          607      607           
  Lines        69907    69899    -8     
========================================
- Hits         39850    39849    -1     
+ Misses       26660    26650   -10     
- Partials      3397     3400    +3     

Impacted Files	Coverage Δ
internal/cli/dumpconfig.go	0.00% <0.00%> (ø)
internal/cli/server/config.go	73.61% <ø> (ø)
accounts/keystore/watch.go	90.69% <0.00%> (-4.66%)	⬇️
console/console.go	62.69% <0.00%> (-3.97%)	⬇️
les/utils/exec_queue.go	88.88% <0.00%> (-2.78%)	⬇️
accounts/keystore/account_cache.go	90.20% <0.00%> (-2.10%)	⬇️
core/state/trie_prefetcher.go	78.62% <0.00%> (-1.53%)	⬇️
les/odr.go	89.02% <0.00%> (-1.22%)	⬇️
consensus/ethash/consensus.go	40.21% <0.00%> (-1.07%)	⬇️
p2p/simulations/network.go	57.76% <0.00%> (-0.88%)	⬇️
... and 20 more

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