Remove memory leaks

[vil02]

Memory allocated in:

• https://github.com/ujjwall-R/Dree/blob/bfa66d13db20cf28ed3ee2903dcd6f634a092721/src/main.cpp#L57
• https://github.com/ujjwall-R/Dree/blob/bfa66d13db20cf28ed3ee2903dcd6f634a092721/src/main.cpp#L61
• https://github.com/ujjwall-R/Dree/blob/bfa66d13db20cf28ed3ee2903dcd6f634a092721/src/main.cpp#L70
• https://github.com/ujjwall-R/Dree/blob/bfa66d13db20cf28ed3ee2903dcd6f634a092721/src/main.cpp#L73
• https://github.com/ujjwall-R/Dree/blob/bfa66d13db20cf28ed3ee2903dcd6f634a092721/src/main.cpp#L80
• https://github.com/ujjwall-R/Dree/blob/bfa66d13db20cf28ed3ee2903dcd6f634a092721/src/main.cpp#L87
• https://github.com/ujjwall-R/Dree/blob/bfa66d13db20cf28ed3ee2903dcd6f634a092721/src/main.cpp#L89
• https://github.com/ujjwall-R/Dree/blob/bfa66d13db20cf28ed3ee2903dcd6f634a092721/src/main.cpp#L92
• https://github.com/ujjwall-R/Dree/blob/bfa66d13db20cf28ed3ee2903dcd6f634a092721/src/main.cpp#L101
• https://github.com/ujjwall-R/Dree/blob/bfa66d13db20cf28ed3ee2903dcd6f634a092721/src/main.cpp#L105
• https://github.com/ujjwall-R/Dree/blob/bfa66d13db20cf28ed3ee2903dcd6f634a092721/src/controller/SearchController.cpp#L13
• https://github.com/ujjwall-R/Dree/blob/bfa66d13db20cf28ed3ee2903dcd6f634a092721/src/model/DreeLoader.cpp#L12
• https://github.com/ujjwall-R/Dree/blob/bfa66d13db20cf28ed3ee2903dcd6f634a092721/src/model/DreeLoader.cpp#L33
• https://github.com/ujjwall-R/Dree/blob/bfa66d13db20cf28ed3ee2903dcd6f634a092721/src/model/SearchDirectory.cpp#L28 is never de-allocated (there is no single use of delete).

[supraja777]

I would like to work on this issue @ujjwall-R

[ujjwall-R]

I would like to work on this issue @ujjwall-R

Go ahead.

[muhd360]

@ujjwall-R is this issue still active?